157407973 has 2 divisors, whose sum is σ = 157407974. Its totient is φ = 157407972.

The previous prime is 157407961. The next prime is 157408001. The reversal of 157407973 is 379704751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134050084 + 23357889 = 11578^2 + 4833^2 .

It is a cyclic number.

It is not a de Polignac number, because 157407973 - 2⁵ = 157407941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157407673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78703986 + 78703987.

It is an arithmetic number, because the mean of its divisors is an integer number (78703987).

Almost surely, 2^157407973 is an apocalyptic number.

It is an amenable number.

157407973 is a deficient number, since it is larger than the sum of its proper divisors (1).

157407973 is an equidigital number, since it uses as much as digits as its factorization.

157407973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 185220, while the sum is 43.

The square root of 157407973 is about 12546.2334188393. The cubic root of 157407973 is about 539.9359469064.

The spelling of 157407973 in words is "one hundred fifty-seven million, four hundred seven thousand, nine hundred seventy-three".