56247479 has 2 divisors, whose sum is σ = 56247480. Its totient is φ = 56247478.

The previous prime is 56247427. The next prime is 56247491. The reversal of 56247479 is 97474265.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56247479 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56247979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28123739 + 28123740.

It is an arithmetic number, because the mean of its divisors is an integer number (28123740).

Almost surely, 2^56247479 is an apocalyptic number.

56247479 is a deficient number, since it is larger than the sum of its proper divisors (1).

56247479 is an equidigital number, since it uses as much as digits as its factorization.

56247479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 44.

The square root of 56247479 is about 7499.8319314502. The cubic root of 56247479 is about 383.1489920636.

The spelling of 56247479 in words is "fifty-six million, two hundred forty-seven thousand, four hundred seventy-nine".