157550407 has 16 divisors (see below), whose sum is σ = 192628800. Its totient is φ = 125779968.

The previous prime is 157550387. The next prime is 157550431. The reversal of 157550407 is 704055751.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157550407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157550467) 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, 4719 + ... + 18367.

It is an arithmetic number, because the mean of its divisors is an integer number (12039300).

Almost surely, 2^157550407 is an apocalyptic number.

157550407 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

157550407 is a deficient number, since it is larger than the sum of its proper divisors (35078393).

157550407 is a wasteful number, since it uses less digits than its factorization.

157550407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13770.

The product of its (nonzero) digits is 24500, while the sum is 34.

The square root of 157550407 is about 12551.9085003038. The cubic root of 157550407 is about 540.0987553724.

It can be divided in two parts, 157 and 550407, that added together give a square (550564 = 742²).

The spelling of 157550407 in words is "one hundred fifty-seven million, five hundred fifty thousand, four hundred seven".