157504969 has 2 divisors, whose sum is σ = 157504970. Its totient is φ = 157504968.

The previous prime is 157504961. The next prime is 157504973. The reversal of 157504969 is 969405751.

157504969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130256569 + 27248400 = 11413^2 + 5220^2 .

It is an emirp because it is prime and its reverse (969405751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157504969 - 2³ = 157504961 is a prime.

It is a super-2 number, since 2×157504969² = 49615630519381922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (157504961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78752484 + 78752485.

It is an arithmetic number, because the mean of its divisors is an integer number (78752485).

Almost surely, 2^157504969 is an apocalyptic number.

It is an amenable number.

157504969 is a deficient number, since it is larger than the sum of its proper divisors (1).

157504969 is an equidigital number, since it uses as much as digits as its factorization.

157504969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 340200, while the sum is 46.

The square root of 157504969 is about 12550.0983661484. The cubic root of 157504969 is about 540.0468283578.

The spelling of 157504969 in words is "one hundred fifty-seven million, five hundred four thousand, nine hundred sixty-nine".