157512345 has 16 divisors (see below), whose sum is σ = 252470400. Its totient is φ = 83856384.

The previous prime is 157512323. The next prime is 157512347. The reversal of 157512345 is 543215751.

157512345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 157512345 - 2⁷ = 157512217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157512347) 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, 445 + ... + 17754.

It is an arithmetic number, because the mean of its divisors is an integer number (15779400).

Almost surely, 2^157512345 is an apocalyptic number.

157512345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157512345 is a deficient number, since it is larger than the sum of its proper divisors (94958055).

157512345 is a wasteful number, since it uses less digits than its factorization.

157512345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18784.

The product of its digits is 21000, while the sum is 33.

The square root of 157512345 is about 12550.3922249466. The cubic root of 157512345 is about 540.0552584056.

The spelling of 157512345 in words is "one hundred fifty-seven million, five hundred twelve thousand, three hundred forty-five".