56554387 has 2 divisors, whose sum is σ = 56554388. Its totient is φ = 56554386.

The previous prime is 56554369. The next prime is 56554409. The reversal of 56554387 is 78345565.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56554387 is a prime.

It is not a weakly prime, because it can be changed into another prime (56554307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28277193 + 28277194.

It is an arithmetic number, because the mean of its divisors is an integer number (28277194).

Almost surely, 2^56554387 is an apocalyptic number.

56554387 is a deficient number, since it is larger than the sum of its proper divisors (1).

56554387 is an equidigital number, since it uses as much as digits as its factorization.

56554387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504000, while the sum is 43.

The square root of 56554387 is about 7520.2650884128. The cubic root of 56554387 is about 383.8445981247.

The spelling of 56554387 in words is "fifty-six million, five hundred fifty-four thousand, three hundred eighty-seven".