157607881 has 2 divisors, whose sum is σ = 157607882. Its totient is φ = 157607880.

The previous prime is 157607777. The next prime is 157607887. The reversal of 157607881 is 188706751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117917881 + 39690000 = 10859^2 + 6300^2 .

It is a cyclic number.

It is not a de Polignac number, because 157607881 - 2¹⁹ = 157083593 is a prime.

It is a super-2 number, since 2×157607881² = 49680488306620322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (157607887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78803940 + 78803941.

It is an arithmetic number, because the mean of its divisors is an integer number (78803941).

Almost surely, 2^157607881 is an apocalyptic number.

It is an amenable number.

157607881 is a deficient number, since it is larger than the sum of its proper divisors (1).

157607881 is an equidigital number, since it uses as much as digits as its factorization.

157607881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 43.

The square root of 157607881 is about 12554.1977441810. The cubic root of 157607881 is about 540.1644229527.

The spelling of 157607881 in words is "one hundred fifty-seven million, six hundred seven thousand, eight hundred eighty-one".