157857250 has 16 divisors (see below), whose sum is σ = 295509240. Its totient is φ = 63142800.

The previous prime is 157857221. The next prime is 157857277. The reversal of 157857250 is 52758751.

157857250 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 4 ways, for example, as 46744569 + 111112681 = 6837^2 + 10541^2 .

It is a super-2 number, since 2×157857250² = 49837822755125000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315465 + ... + 315964.

Almost surely, 2^157857250 is an apocalyptic number.

157857250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157857250 is a deficient number, since it is larger than the sum of its proper divisors (137651990).

157857250 is an equidigital number, since it uses as much as digits as its factorization.

157857250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631446 (or 631436 counting only the distinct ones).

The product of its (nonzero) digits is 98000, while the sum is 40.

The square root of 157857250 is about 12564.1255167242. The cubic root of 157857250 is about 540.4491576205.

The spelling of 157857250 in words is "one hundred fifty-seven million, eight hundred fifty-seven thousand, two hundred fifty".