155253402 has 16 divisors (see below), whose sum is σ = 345007680. Its totient is φ = 51751116.

The previous prime is 155253391. The next prime is 155253403. The reversal of 155253402 is 204352551.

It is a happy number.

155253402 is a `hidden beast` number, since 1 + 5 + 5 + 253 + 402 = 666.

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 (155253403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1437478 + ... + 1437585.

It is an arithmetic number, because the mean of its divisors is an integer number (21562980).

Almost surely, 2^155253402 is an apocalyptic number.

155253402 is an abundant number, since it is smaller than the sum of its proper divisors (189754278).

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

155253402 is a wasteful number, since it uses less digits than its factorization.

155253402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2875074 (or 2875068 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 155253402 is about 12460.0723111866. The cubic root of 155253402 is about 537.4611063979.

The spelling of 155253402 in words is "one hundred fifty-five million, two hundred fifty-three thousand, four hundred two".