157549907 has 2 divisors, whose sum is σ = 157549908. Its totient is φ = 157549906.

The previous prime is 157549891. The next prime is 157549913. The reversal of 157549907 is 709945751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157549907 - 2⁴ = 157549891 is a prime.

It is not a weakly prime, because it can be changed into another prime (157549207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78774953 + 78774954.

It is an arithmetic number, because the mean of its divisors is an integer number (78774954).

Almost surely, 2^157549907 is an apocalyptic number.

157549907 is a deficient number, since it is larger than the sum of its proper divisors (1).

157549907 is an equidigital number, since it uses as much as digits as its factorization.

157549907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 396900, while the sum is 47.

The square root of 157549907 is about 12551.8885829982. Note that the first 3 decimals coincide. The cubic root of 157549907 is about 540.0981840216.

The spelling of 157549907 in words is "one hundred fifty-seven million, five hundred forty-nine thousand, nine hundred seven".