137279957 has 2 divisors, whose sum is σ = 137279958. Its totient is φ = 137279956.

The previous prime is 137279917. The next prime is 137280001. The reversal of 137279957 is 759972731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119924401 + 17355556 = 10951^2 + 4166^2 .

It is a cyclic number.

It is not a de Polignac number, because 137279957 - 2¹⁸ = 137017813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137279917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68639978 + 68639979.

It is an arithmetic number, because the mean of its divisors is an integer number (68639979).

Almost surely, 2^137279957 is an apocalyptic number.

It is an amenable number.

137279957 is a deficient number, since it is larger than the sum of its proper divisors (1).

137279957 is an equidigital number, since it uses as much as digits as its factorization.

137279957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 833490, while the sum is 50.

The square root of 137279957 is about 11716.6529777066. The cubic root of 137279957 is about 515.8645822258.

The spelling of 137279957 in words is "one hundred thirty-seven million, two hundred seventy-nine thousand, nine hundred fifty-seven".