507671257 has 4 divisors (see below), whose sum is σ = 508646196. Its totient is φ = 506696320.

The previous prime is 507671251. The next prime is 507671321. The reversal of 507671257 is 752176705.

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 50395801 + 457275456 = 7099^2 + 21384^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-507671257 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (507671251) 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, 486688 + ... + 487729.

It is an arithmetic number, because the mean of its divisors is an integer number (127161549).

Almost surely, 2^507671257 is an apocalyptic number.

It is an amenable number.

507671257 is a deficient number, since it is larger than the sum of its proper divisors (974939).

507671257 is an equidigital number, since it uses as much as digits as its factorization.

507671257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974938.

The product of its (nonzero) digits is 102900, while the sum is 40.

The square root of 507671257 is about 22531.5613529112. The cubic root of 507671257 is about 797.7390625762.

The spelling of 507671257 in words is "five hundred seven million, six hundred seventy-one thousand, two hundred fifty-seven".