1555000416 has 240 divisors, whose sum is σ = 4797001440. Its totient is φ = 493516800.

The previous prime is 1555000411. The next prime is 1555000427. The reversal of 1555000416 is 6140005551.

It is a happy number.

1555000416 is a `hidden beast` number, since 155 + 500 + 0 + 4 + 1 + 6 = 666.

1555000416 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1555000416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1555000411) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10297941 + ... + 10298091.

It is an arithmetic number, because the mean of its divisors is an integer number (19987506).

Almost surely, 2^1555000416 is an apocalyptic number.

1555000416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1555000416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2398500720).

1555000416 is an abundant number, since it is smaller than the sum of its proper divisors (3242001024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1555000416 is a wasteful number, since it uses less digits than its factorization.

1555000416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 1555000416 is about 39433.4935809649. The cubic root of 1555000416 is about 1158.5376976181.

Adding to 1555000416 its reverse (6140005551), we get a palindrome (7695005967).

The spelling of 1555000416 in words is "one billion, five hundred fifty-five million, four hundred sixteen", and thus it is an aban number.