157021437 has 16 divisors (see below), whose sum is σ = 219086208. Its totient is φ = 99844800.

The previous prime is 157021421. The next prime is 157021439. The reversal of 157021437 is 734120751.

It is not a de Polignac number, because 157021437 - 2⁴ = 157021421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157021439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22687 + ... + 28787.

It is an arithmetic number, because the mean of its divisors is an integer number (13692888).

Almost surely, 2^157021437 is an apocalyptic number.

It is an amenable number.

157021437 is a deficient number, since it is larger than the sum of its proper divisors (62064771).

157021437 is a wasteful number, since it uses less digits than its factorization.

157021437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6500.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 157021437 is about 12530.8194863704. The cubic root of 157021437 is about 539.4936233812.

The spelling of 157021437 in words is "one hundred fifty-seven million, twenty-one thousand, four hundred thirty-seven".