7512656401 has 2 divisors, whose sum is σ = 7512656402. Its totient is φ = 7512656400.

The previous prime is 7512656383. The next prime is 7512656447. The reversal of 7512656401 is 1046562157.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7237925776 + 274730625 = 85076^2 + 16575^2 .

It is a cyclic number.

It is not a de Polignac number, because 7512656401 - 2⁵ = 7512656369 is a prime.

It is not a weakly prime, because it can be changed into another prime (7512656461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3756328200 + 3756328201.

It is an arithmetic number, because the mean of its divisors is an integer number (3756328201).

Almost surely, 2^7512656401 is an apocalyptic number.

It is an amenable number.

7512656401 is a deficient number, since it is larger than the sum of its proper divisors (1).

7512656401 is an equidigital number, since it uses as much as digits as its factorization.

7512656401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 7512656401 is about 86675.5813421520. The cubic root of 7512656401 is about 1958.5342714660.

The spelling of 7512656401 in words is "seven billion, five hundred twelve million, six hundred fifty-six thousand, four hundred one".