651572131 has 4 divisors (see below), whose sum is σ = 744653872. Its totient is φ = 558490392.

The previous prime is 651572101. The next prime is 651572147. The reversal of 651572131 is 131275156.

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

It is a cyclic number.

It is not a de Polignac number, because 651572131 - 2⁵ = 651572099 is a prime.

It is a super-2 number, since 2×651572131² = 849092483791762322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 651572093 and 651572102.

It is not an unprimeable number, because it can be changed into a prime (651572101) 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, 46540860 + ... + 46540873.

It is an arithmetic number, because the mean of its divisors is an integer number (186163468).

Almost surely, 2^651572131 is an apocalyptic number.

651572131 is a deficient number, since it is larger than the sum of its proper divisors (93081741).

651572131 is an equidigital number, since it uses as much as digits as its factorization.

651572131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93081740.

The product of its digits is 6300, while the sum is 31.

The square root of 651572131 is about 25525.9109729702. The cubic root of 651572131 is about 866.9369232274.

The spelling of 651572131 in words is "six hundred fifty-one million, five hundred seventy-two thousand, one hundred thirty-one".