157712500 has 144 divisors (see below), whose sum is σ = 398974464. Its totient is φ = 54000000.

The previous prime is 157712491. The next prime is 157712549. The reversal of 157712500 is 5217751.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4262482 + ... + 4262518.

It is an arithmetic number, because the mean of its divisors is an integer number (2770656).

Almost surely, 2^157712500 is an apocalyptic number.

157712500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157712500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199487232).

157712500 is an abundant number, since it is smaller than the sum of its proper divisors (241261964).

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

157712500 is a wasteful number, since it uses less digits than its factorization.

157712500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 157712500 is about 12558.3637469218. The cubic root of 157712500 is about 540.2839156287.

The spelling of 157712500 in words is "one hundred fifty-seven million, seven hundred twelve thousand, five hundred".