158457071 has 4 divisors (see below), whose sum is σ = 158508000. Its totient is φ = 158406144.

The previous prime is 158457029. The next prime is 158457083. The reversal of 158457071 is 170754851.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 158457071 - 2²⁶ = 91348207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158457371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20471 + ... + 27128.

It is an arithmetic number, because the mean of its divisors is an integer number (39627000).

Almost surely, 2^158457071 is an apocalyptic number.

158457071 is a deficient number, since it is larger than the sum of its proper divisors (50929).

158457071 is an equidigital number, since it uses as much as digits as its factorization.

158457071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50928.

The product of its (nonzero) digits is 39200, while the sum is 38.

The square root of 158457071 is about 12587.9732681635. The cubic root of 158457071 is about 541.1328196526.

The spelling of 158457071 in words is "one hundred fifty-eight million, four hundred fifty-seven thousand, seventy-one".