56381407 has 2 divisors, whose sum is σ = 56381408. Its totient is φ = 56381406.

The previous prime is 56381399. The next prime is 56381419. The reversal of 56381407 is 70418365.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56381407 - 2³ = 56381399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56381447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28190703 + 28190704.

It is an arithmetic number, because the mean of its divisors is an integer number (28190704).

Almost surely, 2^56381407 is an apocalyptic number.

56381407 is a deficient number, since it is larger than the sum of its proper divisors (1).

56381407 is an equidigital number, since it uses as much as digits as its factorization.

56381407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 56381407 is about 7508.7553562491. The cubic root of 56381407 is about 383.4528498576.

The spelling of 56381407 in words is "fifty-six million, three hundred eighty-one thousand, four hundred seven".