155245538 has 32 divisors (see below), whose sum is σ = 279465984. Its totient is φ = 63238032.

The previous prime is 155245537. The next prime is 155245553. The reversal of 155245538 is 835542551.

It is not an unprimeable number, because it can be changed into a prime (155245537) 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 15 ways as a sum of consecutive naturals, for example, 52331 + ... + 55217.

It is an arithmetic number, because the mean of its divisors is an integer number (8733312).

Almost surely, 2^155245538 is an apocalyptic number.

155245538 is a deficient number, since it is larger than the sum of its proper divisors (124220446).

155245538 is a wasteful number, since it uses less digits than its factorization.

155245538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3086.

The product of its digits is 120000, while the sum is 38.

The square root of 155245538 is about 12459.7567391984. The cubic root of 155245538 is about 537.4520316306.

The spelling of 155245538 in words is "one hundred fifty-five million, two hundred forty-five thousand, five hundred thirty-eight".