1555431096 has 16 divisors (see below), whose sum is σ = 3888577800. Its totient is φ = 518477024.

The previous prime is 1555431091. The next prime is 1555431127. The reversal of 1555431096 is 6901345551.

It is a happy number.

It is a super-2 number, since 2×1555431096² = 4838731788807522432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1555431091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32404791 + ... + 32404838.

Almost surely, 2^1555431096 is an apocalyptic number.

It is an amenable number.

1555431096 is an abundant number, since it is smaller than the sum of its proper divisors (2333146704).

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

1555431096 is a wasteful number, since it uses less digits than its factorization.

1555431096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64809638 (or 64809634 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 39.

The square root of 1555431096 is about 39438.9540429256. The cubic root of 1555431096 is about 1158.6446457048.

The spelling of 1555431096 in words is "one billion, five hundred fifty-five million, four hundred thirty-one thousand, ninety-six".