56166247 has 2 divisors, whose sum is σ = 56166248. Its totient is φ = 56166246.

The previous prime is 56166241. The next prime is 56166263. The reversal of 56166247 is 74266165.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56166247 - 2³ = 56166239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56166241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28083123 + 28083124.

It is an arithmetic number, because the mean of its divisors is an integer number (28083124).

Almost surely, 2^56166247 is an apocalyptic number.

56166247 is a deficient number, since it is larger than the sum of its proper divisors (1).

56166247 is an equidigital number, since it uses as much as digits as its factorization.

56166247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 56166247 is about 7494.4143867283. The cubic root of 56166247 is about 382.9644566588.

The spelling of 56166247 in words is "fifty-six million, one hundred sixty-six thousand, two hundred forty-seven".