56387911 has 2 divisors, whose sum is σ = 56387912. Its totient is φ = 56387910.

The previous prime is 56387899. The next prime is 56387923. The reversal of 56387911 is 11978365.

It is a balanced prime because it is at equal distance from previous prime (56387899) and next prime (56387923).

It is a cyclic number.

It is not a de Polignac number, because 56387911 - 2⁹ = 56387399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56387971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28193955 + 28193956.

It is an arithmetic number, because the mean of its divisors is an integer number (28193956).

Almost surely, 2^56387911 is an apocalyptic number.

56387911 is a deficient number, since it is larger than the sum of its proper divisors (1).

56387911 is an equidigital number, since it uses as much as digits as its factorization.

56387911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 40.

The square root of 56387911 is about 7509.1884381736. The cubic root of 56387911 is about 383.4675939702.

The spelling of 56387911 in words is "fifty-six million, three hundred eighty-seven thousand, nine hundred eleven".