157512645 has 48 divisors (see below), whose sum is σ = 280687680. Its totient is φ = 81683712.

The previous prime is 157512629. The next prime is 157512653. The reversal of 157512645 is 546215751.

157512645 is a `hidden beast` number, since 1 + 5 + 7 + 5 + 1 + 2 + 645 = 666.

It is not a de Polignac number, because 157512645 - 2⁴ = 157512629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 268042 + ... + 268628.

It is an arithmetic number, because the mean of its divisors is an integer number (5847660).

Almost surely, 2^157512645 is an apocalyptic number.

157512645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157512645 is a deficient number, since it is larger than the sum of its proper divisors (123175035).

157512645 is a wasteful number, since it uses less digits than its factorization.

157512645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754 (or 751 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 157512645 is about 12550.4041767586. The cubic root of 157512645 is about 540.0556012707.

The spelling of 157512645 in words is "one hundred fifty-seven million, five hundred twelve thousand, six hundred forty-five".