137159977 has 2 divisors, whose sum is σ = 137159978. Its totient is φ = 137159976.

The previous prime is 137159969. The next prime is 137159987. The reversal of 137159977 is 779951731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124902976 + 12257001 = 11176^2 + 3501^2 .

It is a cyclic number.

It is not a de Polignac number, because 137159977 - 2³ = 137159969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 137159977.

It is not a weakly prime, because it can be changed into another prime (137159987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68579988 + 68579989.

It is an arithmetic number, because the mean of its divisors is an integer number (68579989).

Almost surely, 2^137159977 is an apocalyptic number.

It is an amenable number.

137159977 is a deficient number, since it is larger than the sum of its proper divisors (1).

137159977 is an equidigital number, since it uses as much as digits as its factorization.

137159977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 416745, while the sum is 49.

The square root of 137159977 is about 11711.5317956278. The cubic root of 137159977 is about 515.7142532340.

The spelling of 137159977 in words is "one hundred thirty-seven million, one hundred fifty-nine thousand, nine hundred seventy-seven".