2551624457 has 2 divisors, whose sum is σ = 2551624458. Its totient is φ = 2551624456.

The previous prime is 2551624447. The next prime is 2551624499. The reversal of 2551624457 is 7544261552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1919403721 + 632220736 = 43811^2 + 25144^2 .

It is a cyclic number.

It is not a de Polignac number, because 2551624457 - 2⁴ = 2551624441 is a prime.

It is not a weakly prime, because it can be changed into another prime (2551624447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275812228 + 1275812229.

It is an arithmetic number, because the mean of its divisors is an integer number (1275812229).

Almost surely, 2^2551624457 is an apocalyptic number.

It is an amenable number.

2551624457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551624457 is an equidigital number, since it uses as much as digits as its factorization.

2551624457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336000, while the sum is 41.

The square root of 2551624457 is about 50513.6066520695. The cubic root of 2551624457 is about 1366.4872547814.

The spelling of 2551624457 in words is "two billion, five hundred fifty-one million, six hundred twenty-four thousand, four hundred fifty-seven".