157440571 has 2 divisors, whose sum is σ = 157440572. Its totient is φ = 157440570.

The previous prime is 157440557. The next prime is 157440607. The reversal of 157440571 is 175044751.

157440571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157440571 - 2⁵ = 157440539 is a prime.

It is not a weakly prime, because it can be changed into another prime (157440551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78720285 + 78720286.

It is an arithmetic number, because the mean of its divisors is an integer number (78720286).

Almost surely, 2^157440571 is an apocalyptic number.

157440571 is a deficient number, since it is larger than the sum of its proper divisors (1).

157440571 is an equidigital number, since it uses as much as digits as its factorization.

157440571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 157440571 is about 12547.5324665848. The cubic root of 157440571 is about 539.9732165500.

The spelling of 157440571 in words is "one hundred fifty-seven million, four hundred forty thousand, five hundred seventy-one".