130137257 has 4 divisors (see below), whose sum is σ = 130696020. Its totient is φ = 129578496.

The previous prime is 130137247. The next prime is 130137263. The reversal of 130137257 is 752731031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 752731031 = 13 ⋅57902387.

It can be written as a sum of positive squares in 2 ways, for example, as 51566761 + 78570496 = 7181^2 + 8864^2 .

It is a cyclic number.

It is not a de Polignac number, because 130137257 - 2¹⁸ = 129875113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130137247) 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, 279032 + ... + 279497.

It is an arithmetic number, because the mean of its divisors is an integer number (32674005).

Almost surely, 2^130137257 is an apocalyptic number.

It is an amenable number.

130137257 is a deficient number, since it is larger than the sum of its proper divisors (558763).

130137257 is an equidigital number, since it uses as much as digits as its factorization.

130137257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558762.

The product of its (nonzero) digits is 4410, while the sum is 29.

The square root of 130137257 is about 11407.7717806765. The cubic root of 130137257 is about 506.7579253805.

Adding to 130137257 its reverse (752731031), we get a palindrome (882868288).

The spelling of 130137257 in words is "one hundred thirty million, one hundred thirty-seven thousand, two hundred fifty-seven".