157503761 has 2 divisors, whose sum is σ = 157503762. Its totient is φ = 157503760.

The previous prime is 157503713. The next prime is 157503763. The reversal of 157503761 is 167305751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157377025 + 126736 = 12545^2 + 356^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157503761 is a prime.

Together with 157503763, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (157503763) 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, 78751880 + 78751881.

It is an arithmetic number, because the mean of its divisors is an integer number (78751881).

Almost surely, 2^157503761 is an apocalyptic number.

It is an amenable number.

157503761 is a deficient number, since it is larger than the sum of its proper divisors (1).

157503761 is an equidigital number, since it uses as much as digits as its factorization.

157503761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22050, while the sum is 35.

The square root of 157503761 is about 12550.0502389433. The cubic root of 157503761 is about 540.0454477067.

The spelling of 157503761 in words is "one hundred fifty-seven million, five hundred three thousand, seven hundred sixty-one".