155380538 has 16 divisors (see below), whose sum is σ = 239965440. Its totient is φ = 75402576.

The previous prime is 155380531. The next prime is 155380549. The reversal of 155380538 is 835083551.

155380538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×155380538² = 48286223178338888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155380531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30095 + ... + 34877.

It is an arithmetic number, because the mean of its divisors is an integer number (14997840).

Almost surely, 2^155380538 is an apocalyptic number.

155380538 is a deficient number, since it is larger than the sum of its proper divisors (84584902).

155380538 is a wasteful number, since it uses less digits than its factorization.

155380538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5261.

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 155380538 is about 12465.1730032118. The cubic root of 155380538 is about 537.6077741703.

The spelling of 155380538 in words is "one hundred fifty-five million, three hundred eighty thousand, five hundred thirty-eight".