155966055 has 32 divisors (see below), whose sum is σ = 289225728. Its totient is φ = 70291200.

The previous prime is 155966011. The next prime is 155966093. The reversal of 155966055 is 550669551.

155966055 = 67² + 68² + ... + 776².

It is not a de Polignac number, because 155966055 - 2⁹ = 155965543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155965998 and 155966016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3006 + ... + 17915.

It is an arithmetic number, because the mean of its divisors is an integer number (9038304).

Almost surely, 2^155966055 is an apocalyptic number.

155966055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155966055 is a deficient number, since it is larger than the sum of its proper divisors (133259673).

155966055 is a wasteful number, since it uses less digits than its factorization.

155966055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21007.

The product of its (nonzero) digits is 202500, while the sum is 42.

The square root of 155966055 is about 12488.6370353213. The cubic root of 155966055 is about 538.2822128310.

The spelling of 155966055 in words is "one hundred fifty-five million, nine hundred sixty-six thousand, fifty-five".