157585049 has 2 divisors, whose sum is σ = 157585050. Its totient is φ = 157585048.

The previous prime is 157585039. The next prime is 157585157. The reversal of 157585049 is 940585751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79085449 + 78499600 = 8893^2 + 8860^2 .

It is a cyclic number.

It is not a de Polignac number, because 157585049 - 2⁴ = 157585033 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (157585039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78792524 + 78792525.

It is an arithmetic number, because the mean of its divisors is an integer number (78792525).

Almost surely, 2^157585049 is an apocalyptic number.

It is an amenable number.

157585049 is a deficient number, since it is larger than the sum of its proper divisors (1).

157585049 is an equidigital number, since it uses as much as digits as its factorization.

157585049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252000, while the sum is 44.

The square root of 157585049 is about 12553.2883739680. The cubic root of 157585049 is about 540.1383378999.

The spelling of 157585049 in words is "one hundred fifty-seven million, five hundred eighty-five thousand, forty-nine".