56615123 has 2 divisors, whose sum is σ = 56615124. Its totient is φ = 56615122.

The previous prime is 56615107. The next prime is 56615131. The reversal of 56615123 is 32151665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56615123 - 2⁴ = 56615107 is a prime.

It is not a weakly prime, because it can be changed into another prime (56615023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28307561 + 28307562.

It is an arithmetic number, because the mean of its divisors is an integer number (28307562).

Almost surely, 2^56615123 is an apocalyptic number.

56615123 is a deficient number, since it is larger than the sum of its proper divisors (1).

56615123 is an equidigital number, since it uses as much as digits as its factorization.

56615123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 29.

The square root of 56615123 is about 7524.3021603335. The cubic root of 56615123 is about 383.9819576122.

Adding to 56615123 its reverse (32151665), we get a palindrome (88766788).

The spelling of 56615123 in words is "fifty-six million, six hundred fifteen thousand, one hundred twenty-three".