51610123 has 2 divisors, whose sum is σ = 51610124. Its totient is φ = 51610122.

The previous prime is 51610081. The next prime is 51610171. The reversal of 51610123 is 32101615.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51610123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51610123.

It is not a weakly prime, because it can be changed into another prime (51610193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25805061 + 25805062.

It is an arithmetic number, because the mean of its divisors is an integer number (25805062).

Almost surely, 2^51610123 is an apocalyptic number.

51610123 is a deficient number, since it is larger than the sum of its proper divisors (1).

51610123 is an equidigital number, since it uses as much as digits as its factorization.

51610123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 51610123 is about 7184.0185829381. The cubic root of 51610123 is about 372.3159410787.

Adding to 51610123 its reverse (32101615), we get a palindrome (83711738).

The spelling of 51610123 in words is "fifty-one million, six hundred ten thousand, one hundred twenty-three".