56746181 has 2 divisors, whose sum is σ = 56746182. Its totient is φ = 56746180.

The previous prime is 56746177. The next prime is 56746223. The reversal of 56746181 is 18164765.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47541025 + 9205156 = 6895^2 + 3034^2 .

It is a cyclic number.

It is not a de Polignac number, because 56746181 - 2² = 56746177 is a prime.

It is a super-2 number, since 2×56746181² = 6440258116169522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56746171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28373090 + 28373091.

It is an arithmetic number, because the mean of its divisors is an integer number (28373091).

Almost surely, 2^56746181 is an apocalyptic number.

It is an amenable number.

56746181 is a deficient number, since it is larger than the sum of its proper divisors (1).

56746181 is an equidigital number, since it uses as much as digits as its factorization.

56746181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 38.

The square root of 56746181 is about 7533.0061064624. The cubic root of 56746181 is about 384.2780217678.

The spelling of 56746181 in words is "fifty-six million, seven hundred forty-six thousand, one hundred eighty-one".