651641453 has 2 divisors, whose sum is σ = 651641454. Its totient is φ = 651641452.

The previous prime is 651641443. The next prime is 651641491. The reversal of 651641453 is 354146156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 403326889 + 248314564 = 20083^2 + 15758^2 .

It is a cyclic number.

It is not a de Polignac number, because 651641453 - 2⁴ = 651641437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651641443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325820726 + 325820727.

It is an arithmetic number, because the mean of its divisors is an integer number (325820727).

Almost surely, 2^651641453 is an apocalyptic number.

It is an amenable number.

651641453 is a deficient number, since it is larger than the sum of its proper divisors (1).

651641453 is an equidigital number, since it uses as much as digits as its factorization.

651641453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 35.

The square root of 651641453 is about 25527.2688119979. The cubic root of 651641453 is about 866.9676671606.

The spelling of 651641453 in words is "six hundred fifty-one million, six hundred forty-one thousand, four hundred fifty-three".