1555228395 has 72 divisors (see below), whose sum is σ = 3145811760. Its totient is φ = 708704640.

The previous prime is 1555228393. The next prime is 1555228399. The reversal of 1555228395 is 5938225551.

It is a happy number.

1555228395 is a `hidden beast` number, since 1 + 5 + 552 + 2 + 8 + 3 + 95 = 666.

It is not a de Polignac number, because 1555228395 - 2¹ = 1555228393 is a prime.

It is a super-2 number, since 2×1555228395² = 4837470721228552050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1555228395.

It is not an unprimeable number, because it can be changed into a prime (1555228393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 834765 + ... + 836625.

It is an arithmetic number, because the mean of its divisors is an integer number (43691830).

Almost surely, 2^1555228395 is an apocalyptic number.

1555228395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1555228395 is an abundant number, since it is smaller than the sum of its proper divisors (1590583365).

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

1555228395 is a wasteful number, since it uses less digits than its factorization.

1555228395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265 (or 2255 counting only the distinct ones).

The product of its digits is 540000, while the sum is 45.

The square root of 1555228395 is about 39436.3841522014. The cubic root of 1555228395 is about 1158.5943126853.

The spelling of 1555228395 in words is "one billion, five hundred fifty-five million, two hundred twenty-eight thousand, three hundred ninety-five".