56136551 has 2 divisors, whose sum is σ = 56136552. Its totient is φ = 56136550.

The previous prime is 56136541. The next prime is 56136557. The reversal of 56136551 is 15563165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56136551 - 2¹⁸ = 55874407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56136557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28068275 + 28068276.

It is an arithmetic number, because the mean of its divisors is an integer number (28068276).

Almost surely, 2^56136551 is an apocalyptic number.

56136551 is a deficient number, since it is larger than the sum of its proper divisors (1).

56136551 is an equidigital number, since it uses as much as digits as its factorization.

56136551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13500, while the sum is 32.

The square root of 56136551 is about 7492.4329159493. The cubic root of 56136551 is about 382.8969516003.

The spelling of 56136551 in words is "fifty-six million, one hundred thirty-six thousand, five hundred fifty-one".