157458761 has 2 divisors, whose sum is σ = 157458762. Its totient is φ = 157458760.

The previous prime is 157458731. The next prime is 157458767. The reversal of 157458761 is 167854751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113316025 + 44142736 = 10645^2 + 6644^2 .

It is an emirp because it is prime and its reverse (167854751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157458761 - 2¹⁰ = 157457737 is a prime.

It is a super-2 number, since 2×157458761² = 49586522831310242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (157458767) 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, 78729380 + 78729381.

It is an arithmetic number, because the mean of its divisors is an integer number (78729381).

Almost surely, 2^157458761 is an apocalyptic number.

It is an amenable number.

157458761 is a deficient number, since it is larger than the sum of its proper divisors (1).

157458761 is an equidigital number, since it uses as much as digits as its factorization.

157458761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 235200, while the sum is 44.

The square root of 157458761 is about 12548.2572893609. The cubic root of 157458761 is about 539.9940111361.

The spelling of 157458761 in words is "one hundred fifty-seven million, four hundred fifty-eight thousand, seven hundred sixty-one".