56378431 has 2 divisors, whose sum is σ = 56378432. Its totient is φ = 56378430.

The previous prime is 56378419. The next prime is 56378447. The reversal of 56378431 is 13487365.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56378431 - 2¹³ = 56370239 is a prime.

It is a super-2 number, since 2×56378431² = 6357054964043522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56378831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28189215 + 28189216.

It is an arithmetic number, because the mean of its divisors is an integer number (28189216).

Almost surely, 2^56378431 is an apocalyptic number.

56378431 is a deficient number, since it is larger than the sum of its proper divisors (1).

56378431 is an equidigital number, since it uses as much as digits as its factorization.

56378431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 56378431 is about 7508.5571849724. The cubic root of 56378431 is about 383.4461030958.

The spelling of 56378431 in words is "fifty-six million, three hundred seventy-eight thousand, four hundred thirty-one".