15122923 has 2 divisors, whose sum is σ = 15122924. Its totient is φ = 15122922.

The previous prime is 15122897. The next prime is 15122927. The reversal of 15122923 is 32922151.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15122923 is a prime.

It is not a weakly prime, because it can be changed into another prime (15122927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7561461 + 7561462.

It is an arithmetic number, because the mean of its divisors is an integer number (7561462).

Almost surely, 2^15122923 is an apocalyptic number.

15122923 is a deficient number, since it is larger than the sum of its proper divisors (1).

15122923 is an equidigital number, since it uses as much as digits as its factorization.

15122923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 25.

The square root of 15122923 is about 3888.8202581246. The cubic root of 15122923 is about 247.2930515080.

The spelling of 15122923 in words is "fifteen million, one hundred twenty-two thousand, nine hundred twenty-three".