155409604 has 24 divisors (see below), whose sum is σ = 311105088. Its totient is φ = 66542880.

The previous prime is 155409601. The next prime is 155409613. The reversal of 155409604 is 406904551.

It is a self number, because there is not a number n which added to its sum of digits gives 155409604.

It is not an unprimeable number, because it can be changed into a prime (155409601) 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, 42222 + ... + 45754.

It is an arithmetic number, because the mean of its divisors is an integer number (12962712).

Almost surely, 2^155409604 is an apocalyptic number.

155409604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

155409604 is an abundant number, since it is smaller than the sum of its proper divisors (155695484).

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

155409604 is a wasteful number, since it uses less digits than its factorization.

155409604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5115 (or 5113 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 155409604 is about 12466.3388370443. The cubic root of 155409604 is about 537.6412943127.

The spelling of 155409604 in words is "one hundred fifty-five million, four hundred nine thousand, six hundred four".