157445604 has 18 divisors (see below), whose sum is σ = 397987590. Its totient is φ = 52481856.

The previous prime is 157445599. The next prime is 157445641. The reversal of 157445604 is 406544751.

157445604 is a `hidden beast` number, since 1 + 5 + 7 + 4 + 45 + 604 = 666.

157445604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 155750400 + 1695204 = 12480^2 + 1302^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4373489 = 157445604 / (1 + 5 + 7 + 4 + 4 + 5 + 6 + 0 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2186709 + ... + 2186780.

Almost surely, 2^157445604 is an apocalyptic number.

It is an amenable number.

157445604 is an abundant number, since it is smaller than the sum of its proper divisors (240541986).

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

157445604 is a wasteful number, since it uses less digits than its factorization.

157445604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4373499 (or 4373494 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 157445604 is about 12547.7330223431. The cubic root of 157445604 is about 539.9789703745.

The spelling of 157445604 in words is "one hundred fifty-seven million, four hundred forty-five thousand, six hundred four".