157575923 has 2 divisors, whose sum is σ = 157575924. Its totient is φ = 157575922.

The previous prime is 157575919. The next prime is 157575947. The reversal of 157575923 is 329575751.

It is a weak prime.

It is an emirp because it is prime and its reverse (329575751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157575923 - 2² = 157575919 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (157575973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78787961 + 78787962.

It is an arithmetic number, because the mean of its divisors is an integer number (78787962).

Almost surely, 2^157575923 is an apocalyptic number.

157575923 is a deficient number, since it is larger than the sum of its proper divisors (1).

157575923 is an equidigital number, since it uses as much as digits as its factorization.

157575923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 330750, while the sum is 44.

The square root of 157575923 is about 12552.9248782903. The cubic root of 157575923 is about 540.1279109428.

The spelling of 157575923 in words is "one hundred fifty-seven million, five hundred seventy-five thousand, nine hundred twenty-three".