157761671 has 2 divisors, whose sum is σ = 157761672. Its totient is φ = 157761670.

The previous prime is 157761661. The next prime is 157761679. The reversal of 157761671 is 176167751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157761671 - 2¹⁸ = 157499527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157761679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78880835 + 78880836.

It is an arithmetic number, because the mean of its divisors is an integer number (78880836).

Almost surely, 2^157761671 is an apocalyptic number.

157761671 is a deficient number, since it is larger than the sum of its proper divisors (1).

157761671 is an equidigital number, since it uses as much as digits as its factorization.

157761671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61740, while the sum is 41.

The square root of 157761671 is about 12560.3212936612. The cubic root of 157761671 is about 540.3400590120.

The spelling of 157761671 in words is "one hundred fifty-seven million, seven hundred sixty-one thousand, six hundred seventy-one".