155992856 has 32 divisors (see below), whose sum is σ = 306255600. Its totient is φ = 74390400.

The previous prime is 155992853. The next prime is 155992861. The reversal of 155992856 is 658299551.

It is a super-2 number, since 2×155992856² = 48667542246073472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155992853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15206 + ... + 23306.

Almost surely, 2^155992856 is an apocalyptic number.

It is an amenable number.

155992856 is a deficient number, since it is larger than the sum of its proper divisors (150262744).

155992856 is a wasteful number, since it uses less digits than its factorization.

155992856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8219 (or 8215 counting only the distinct ones).

The product of its digits is 972000, while the sum is 50.

The square root of 155992856 is about 12489.7100046398. The cubic root of 155992856 is about 538.3130436322.

The spelling of 155992856 in words is "one hundred fifty-five million, nine hundred ninety-two thousand, eight hundred fifty-six".