157953947 has 2 divisors, whose sum is σ = 157953948. Its totient is φ = 157953946.

The previous prime is 157953941. The next prime is 157953989. The reversal of 157953947 is 749359751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157953947 - 2⁴ = 157953931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157953895 and 157953904.

It is not a weakly prime, because it can be changed into another prime (157953941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78976973 + 78976974.

It is an arithmetic number, because the mean of its divisors is an integer number (78976974).

Almost surely, 2^157953947 is an apocalyptic number.

157953947 is a deficient number, since it is larger than the sum of its proper divisors (1).

157953947 is an equidigital number, since it uses as much as digits as its factorization.

157953947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1190700, while the sum is 50.

The square root of 157953947 is about 12567.9730664893. The cubic root of 157953947 is about 540.5594875654.

The spelling of 157953947 in words is "one hundred fifty-seven million, nine hundred fifty-three thousand, nine hundred forty-seven".