157880537 has 4 divisors (see below), whose sum is σ = 157979556. Its totient is φ = 157781520.

The previous prime is 157880521. The next prime is 157880561. The reversal of 157880537 is 735088751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 735088751 = 12073 ⋅60887.

It can be written as a sum of positive squares in 2 ways, for example, as 140873161 + 17007376 = 11869^2 + 4124^2 .

It is a cyclic number.

It is not a de Polignac number, because 157880537 - 2⁴ = 157880521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157180537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47078 + ... + 50319.

It is an arithmetic number, because the mean of its divisors is an integer number (39494889).

Almost surely, 2^157880537 is an apocalyptic number.

It is an amenable number.

157880537 is a deficient number, since it is larger than the sum of its proper divisors (99019).

157880537 is an equidigital number, since it uses as much as digits as its factorization.

157880537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99018.

The product of its (nonzero) digits is 235200, while the sum is 44.

The square root of 157880537 is about 12565.0522084073. The cubic root of 157880537 is about 540.4757318845.

The spelling of 157880537 in words is "one hundred fifty-seven million, eight hundred eighty thousand, five hundred thirty-seven".