157767913 has 2 divisors, whose sum is σ = 157767914. Its totient is φ = 157767912.

The previous prime is 157767853. The next prime is 157767923. The reversal of 157767913 is 319767751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145636624 + 12131289 = 12068^2 + 3483^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157767913 is a prime.

It is not a weakly prime, because it can be changed into another prime (157767923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78883956 + 78883957.

It is an arithmetic number, because the mean of its divisors is an integer number (78883957).

Almost surely, 2^157767913 is an apocalyptic number.

It is an amenable number.

157767913 is a deficient number, since it is larger than the sum of its proper divisors (1).

157767913 is an equidigital number, since it uses as much as digits as its factorization.

157767913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 277830, while the sum is 46.

The square root of 157767913 is about 12560.5697721083. The cubic root of 157767913 is about 540.3471852849.

The spelling of 157767913 in words is "one hundred fifty-seven million, seven hundred sixty-seven thousand, nine hundred thirteen".