56406739 has 2 divisors, whose sum is σ = 56406740. Its totient is φ = 56406738.

The previous prime is 56406709. The next prime is 56406751. The reversal of 56406739 is 93760465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56406739 - 2¹³ = 56398547 is a prime.

It is a super-2 number, since 2×56406739² = 6363440409228242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56406709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28203369 + 28203370.

It is an arithmetic number, because the mean of its divisors is an integer number (28203370).

Almost surely, 2^56406739 is an apocalyptic number.

56406739 is a deficient number, since it is larger than the sum of its proper divisors (1).

56406739 is an equidigital number, since it uses as much as digits as its factorization.

56406739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 56406739 is about 7510.4419976457. The cubic root of 56406739 is about 383.5102693374.

The spelling of 56406739 in words is "fifty-six million, four hundred six thousand, seven hundred thirty-nine".