155771052 has 48 divisors (see below), whose sum is σ = 368831232. Its totient is φ = 51163840.

The previous prime is 155771029. The next prime is 155771053. The reversal of 155771052 is 250177551.

It is not an unprimeable number, because it can be changed into a prime (155771053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309433 + ... + 309935.

It is an arithmetic number, because the mean of its divisors is an integer number (7683984).

Almost surely, 2^155771052 is an apocalyptic number.

155771052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155771052 is an abundant number, since it is smaller than the sum of its proper divisors (213060180).

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

155771052 is a wasteful number, since it uses less digits than its factorization.

155771052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838 (or 836 counting only the distinct ones).

The product of its (nonzero) digits is 12250, while the sum is 33.

The square root of 155771052 is about 12480.8273764202. The cubic root of 155771052 is about 538.0577827500.

The spelling of 155771052 in words is "one hundred fifty-five million, seven hundred seventy-one thousand, fifty-two".