155623056 has 20 divisors (see below), whose sum is σ = 402026352. Its totient is φ = 51874336.

The previous prime is 155623051. The next prime is 155623067. The reversal of 155623056 is 650326551.

It is not an unprimeable number, because it can be changed into a prime (155623051) 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, 1621026 + ... + 1621121.

Almost surely, 2^155623056 is an apocalyptic number.

155623056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

155623056 is an abundant number, since it is smaller than the sum of its proper divisors (246403296).

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

155623056 is a wasteful number, since it uses less digits than its factorization.

155623056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3242158 (or 3242152 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 155623056 is about 12474.8970336432. The cubic root of 155623056 is about 537.8873282475.

The spelling of 155623056 in words is "one hundred fifty-five million, six hundred twenty-three thousand, fifty-six".