1405361556 has 48 divisors (see below), whose sum is σ = 3657050880. Its totient is φ = 466715520.

The previous prime is 1405361537. The next prime is 1405361563. The reversal of 1405361556 is 6551635041.

1405361556 is a `hidden beast` number, since 1 + 40 + 5 + 3 + 61 + 556 = 666.

It is a super-2 number, since 2×1405361556² = 3950082206165482272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1405361556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5260 + ... + 53276.

It is an arithmetic number, because the mean of its divisors is an integer number (76188560).

Almost surely, 2^1405361556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1405361556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1828525440).

1405361556 is an abundant number, since it is smaller than the sum of its proper divisors (2251689324).

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

1405361556 is a wasteful number, since it uses less digits than its factorization.

1405361556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48301 (or 48293 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 1405361556 is about 37488.1522083978. The cubic root of 1405361556 is about 1120.1151975472.

Adding to 1405361556 its reverse (6551635041), we get a palindrome (7956996597).

The spelling of 1405361556 in words is "one billion, four hundred five million, three hundred sixty-one thousand, five hundred fifty-six".