56730625397 has 2 divisors, whose sum is σ = 56730625398. Its totient is φ = 56730625396.

The previous prime is 56730625333. The next prime is 56730625409. The reversal of 56730625397 is 79352603765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51172773796 + 5557851601 = 226214^2 + 74551^2 .

It is a cyclic number.

It is not a de Polignac number, because 56730625397 - 2⁶ = 56730625333 is a prime.

It is a super-3 number, since 3×56730625397³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56730625327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28365312698 + 28365312699.

It is an arithmetic number, because the mean of its divisors is an integer number (28365312699).

Almost surely, 2^56730625397 is an apocalyptic number.

It is an amenable number.

56730625397 is a deficient number, since it is larger than the sum of its proper divisors (1).

56730625397 is an equidigital number, since it uses as much as digits as its factorization.

56730625397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7144200, while the sum is 53.

The spelling of 56730625397 in words is "fifty-six billion, seven hundred thirty million, six hundred twenty-five thousand, three hundred ninety-seven".