157704761 has 2 divisors, whose sum is σ = 157704762. Its totient is φ = 157704760.

The previous prime is 157704713. The next prime is 157704791. The reversal of 157704761 is 167407751.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103225600 + 54479161 = 10160^2 + 7381^2 .

It is a cyclic number.

It is not a de Polignac number, because 157704761 - 2¹⁰ = 157703737 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (157704791) 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, 78852380 + 78852381.

It is an arithmetic number, because the mean of its divisors is an integer number (78852381).

Almost surely, 2^157704761 is an apocalyptic number.

It is an amenable number.

157704761 is a deficient number, since it is larger than the sum of its proper divisors (1).

157704761 is an equidigital number, since it uses as much as digits as its factorization.

157704761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41160, while the sum is 38.

The square root of 157704761 is about 12558.0556217911. The cubic root of 157704761 is about 540.2750781859.

The spelling of 157704761 in words is "one hundred fifty-seven million, seven hundred four thousand, seven hundred sixty-one".