56623529551 has 2 divisors, whose sum is σ = 56623529552. Its totient is φ = 56623529550.

The previous prime is 56623529533. The next prime is 56623529561. The reversal of 56623529551 is 15592532665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56623529551 - 2³¹ = 54476045903 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56623529495 and 56623529504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56623529561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28311764775 + 28311764776.

It is an arithmetic number, because the mean of its divisors is an integer number (28311764776).

Almost surely, 2^56623529551 is an apocalyptic number.

56623529551 is a deficient number, since it is larger than the sum of its proper divisors (1).

56623529551 is an equidigital number, since it uses as much as digits as its factorization.

56623529551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2430000, while the sum is 49.

The spelling of 56623529551 in words is "fifty-six billion, six hundred twenty-three million, five hundred twenty-nine thousand, five hundred fifty-one".