155399752 has 16 divisors (see below), whose sum is σ = 291980160. Its totient is φ = 77538384.

The previous prime is 155399749. The next prime is 155399767. The reversal of 155399752 is 257993551.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 16048 + ... + 23839.

It is an arithmetic number, because the mean of its divisors is an integer number (18248760).

Almost surely, 2^155399752 is an apocalyptic number.

It is an amenable number.

155399752 is a deficient number, since it is larger than the sum of its proper divisors (136580408).

155399752 is a wasteful number, since it uses less digits than its factorization.

155399752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40380 (or 40376 counting only the distinct ones).

The product of its digits is 425250, while the sum is 46.

The square root of 155399752 is about 12465.9436867010. The cubic root of 155399752 is about 537.6299330372.

The spelling of 155399752 in words is "one hundred fifty-five million, three hundred ninety-nine thousand, seven hundred fifty-two".