137498957 has 4 divisors (see below), whose sum is σ = 137579676. Its totient is φ = 137418240.

The previous prime is 137498917. The next prime is 137498971. The reversal of 137498957 is 759894731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69122596 + 68376361 = 8314^2 + 8269^2 .

It is a cyclic number.

It is not a de Polignac number, because 137498957 - 2⁸ = 137498701 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 137498899 and 137498908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137498917) 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, 37748 + ... + 41229.

It is an arithmetic number, because the mean of its divisors is an integer number (34394919).

Almost surely, 2^137498957 is an apocalyptic number.

It is an amenable number.

137498957 is a deficient number, since it is larger than the sum of its proper divisors (80719).

137498957 is an equidigital number, since it uses as much as digits as its factorization.

137498957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80718.

The product of its digits is 1905120, while the sum is 53.

The square root of 137498957 is about 11725.9949258048. The cubic root of 137498957 is about 516.1387526726.

The spelling of 137498957 in words is "one hundred thirty-seven million, four hundred ninety-eight thousand, nine hundred fifty-seven".