157877873 has 2 divisors, whose sum is σ = 157877874. Its totient is φ = 157877872.

The previous prime is 157877857. The next prime is 157877887. The reversal of 157877873 is 378778751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123032464 + 34845409 = 11092^2 + 5903^2 .

It is a cyclic number.

It is not a de Polignac number, because 157877873 - 2⁴ = 157877857 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (157877813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78938936 + 78938937.

It is an arithmetic number, because the mean of its divisors is an integer number (78938937).

Almost surely, 2^157877873 is an apocalyptic number.

It is an amenable number.

157877873 is a deficient number, since it is larger than the sum of its proper divisors (1).

157877873 is an equidigital number, since it uses as much as digits as its factorization.

157877873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304960, while the sum is 53.

The square root of 157877873 is about 12564.9461996461. The cubic root of 157877873 is about 540.4726919585.

The spelling of 157877873 in words is "one hundred fifty-seven million, eight hundred seventy-seven thousand, eight hundred seventy-three".