157212200 has 24 divisors (see below), whose sum is σ = 365518830. Its totient is φ = 62884800.

The previous prime is 157212169. The next prime is 157212221. The reversal of 157212200 is 2212751.

It can be written as a sum of positive squares in 3 ways, for example, as 78818884 + 78393316 = 8878^2 + 8854^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 392831 + ... + 393230.

Almost surely, 2^157212200 is an apocalyptic number.

157212200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157212200 is an abundant number, since it is smaller than the sum of its proper divisors (208306630).

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

157212200 is a wasteful number, since it uses less digits than its factorization.

157212200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786077 (or 786068 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 157212200 is about 12538.4289286976. The cubic root of 157212200 is about 539.7120092172.

Adding to 157212200 its reverse (2212751), we get a palindrome (159424951).

The spelling of 157212200 in words is "one hundred fifty-seven million, two hundred twelve thousand, two hundred".