137255897 has 4 divisors (see below), whose sum is σ = 137295540. Its totient is φ = 137216256.

The previous prime is 137255893. The next prime is 137255929. The reversal of 137255897 is 798552731.

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 48594841 + 88661056 = 6971^2 + 9416^2 .

It is a cyclic number.

It is not a de Polignac number, because 137255897 - 2² = 137255893 is a prime.

It is a super-2 number, since 2×137255897² = 37678362522549218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137255891) 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, 14072 + ... + 21737.

It is an arithmetic number, because the mean of its divisors is an integer number (34323885).

Almost surely, 2^137255897 is an apocalyptic number.

It is an amenable number.

137255897 is a deficient number, since it is larger than the sum of its proper divisors (39643).

137255897 is an equidigital number, since it uses as much as digits as its factorization.

137255897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39642.

The product of its digits is 529200, while the sum is 47.

The square root of 137255897 is about 11715.6261889837. The cubic root of 137255897 is about 515.8344432618.

The spelling of 137255897 in words is "one hundred thirty-seven million, two hundred fifty-five thousand, eight hundred ninety-seven".