137913251 has 4 divisors (see below), whose sum is σ = 157615152. Its totient is φ = 118211352.

The previous prime is 137913247. The next prime is 137913257. The reversal of 137913251 is 152319731.

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

It is not a de Polignac number, because 137913251 - 2² = 137913247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137913257) 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, 9850940 + ... + 9850953.

It is an arithmetic number, because the mean of its divisors is an integer number (39403788).

Almost surely, 2^137913251 is an apocalyptic number.

137913251 is a deficient number, since it is larger than the sum of its proper divisors (19701901).

137913251 is an equidigital number, since it uses as much as digits as its factorization.

137913251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19701900.

The product of its digits is 5670, while the sum is 32.

The square root of 137913251 is about 11743.6472613920. The cubic root of 137913251 is about 516.6566203157.

The spelling of 137913251 in words is "one hundred thirty-seven million, nine hundred thirteen thousand, two hundred fifty-one".