155265201 has 48 divisors (see below), whose sum is σ = 284718720. Its totient is φ = 81881280.

The previous prime is 155265193. The next prime is 155265223. The reversal of 155265201 is 102562551.

155265201 is a `hidden beast` number, since 1 + 5 + 5 + 2 + 652 + 0 + 1 = 666.

It is not a de Polignac number, because 155265201 - 2³ = 155265193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (155265241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29511 + ... + 34371.

It is an arithmetic number, because the mean of its divisors is an integer number (5931640).

Almost surely, 2^155265201 is an apocalyptic number.

It is an amenable number.

155265201 is a deficient number, since it is larger than the sum of its proper divisors (129453519).

155265201 is a wasteful number, since it uses less digits than its factorization.

155265201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4903 (or 4884 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 155265201 is about 12460.5457745638. The cubic root of 155265201 is about 537.4747214360.

It can be divided in two parts, 155 and 265201, that added together give a triangular number (265356 = T₇₂₈).

The spelling of 155265201 in words is "one hundred fifty-five million, two hundred sixty-five thousand, two hundred one".