56554640371 has 2 divisors, whose sum is σ = 56554640372. Its totient is φ = 56554640370.

The previous prime is 56554640369. The next prime is 56554640413. The reversal of 56554640371 is 17304645565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56554640371 - 2¹ = 56554640369 is a prime.

Together with 56554640369, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56554640671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28277320185 + 28277320186.

It is an arithmetic number, because the mean of its divisors is an integer number (28277320186).

Almost surely, 2^56554640371 is an apocalyptic number.

56554640371 is a deficient number, since it is larger than the sum of its proper divisors (1).

56554640371 is an equidigital number, since it uses as much as digits as its factorization.

56554640371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512000, while the sum is 46.

The spelling of 56554640371 in words is "fifty-six billion, five hundred fifty-four million, six hundred forty thousand, three hundred seventy-one".