56749547 has 2 divisors, whose sum is σ = 56749548. Its totient is φ = 56749546.

The previous prime is 56749531. The next prime is 56749613. The reversal of 56749547 is 74594765.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56749547 - 2⁴ = 56749531 is a prime.

It is a super-2 number, since 2×56749547² = 6441022169410418, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56149547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28374773 + 28374774.

It is an arithmetic number, because the mean of its divisors is an integer number (28374774).

Almost surely, 2^56749547 is an apocalyptic number.

56749547 is a deficient number, since it is larger than the sum of its proper divisors (1).

56749547 is an equidigital number, since it uses as much as digits as its factorization.

56749547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 47.

The square root of 56749547 is about 7533.2295199337. The cubic root of 56749547 is about 384.2856196609.

The spelling of 56749547 in words is "fifty-six million, seven hundred forty-nine thousand, five hundred forty-seven".