56123147 has 2 divisors, whose sum is σ = 56123148. Its totient is φ = 56123146.

The previous prime is 56123143. The next prime is 56123159. The reversal of 56123147 is 74132165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56123147 - 2² = 56123143 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56123143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28061573 + 28061574.

It is an arithmetic number, because the mean of its divisors is an integer number (28061574).

Almost surely, 2^56123147 is an apocalyptic number.

56123147 is a deficient number, since it is larger than the sum of its proper divisors (1).

56123147 is an equidigital number, since it uses as much as digits as its factorization.

56123147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 29.

The square root of 56123147 is about 7491.5383600433. The cubic root of 56123147 is about 382.8664737792.

The spelling of 56123147 in words is "fifty-six million, one hundred twenty-three thousand, one hundred forty-seven".