155281604 has 48 divisors (see below), whose sum is σ = 312721920. Its totient is φ = 66977280.

The previous prime is 155281603. The next prime is 155281613. The reversal of 155281604 is 406182551.

It is a super-2 number, since 2×155281604² = 48224753081625632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155281603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38114 + ... + 41990.

It is an arithmetic number, because the mean of its divisors is an integer number (6515040).

Almost surely, 2^155281604 is an apocalyptic number.

It is an amenable number.

155281604 is an abundant number, since it is smaller than the sum of its proper divisors (157440316).

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

155281604 is a wasteful number, since it uses less digits than its factorization.

155281604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3948 (or 3946 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 155281604 is about 12461.2039546747. The cubic root of 155281604 is about 537.4936479509.

The spelling of 155281604 in words is "one hundred fifty-five million, two hundred eighty-one thousand, six hundred four".