157271647 has 8 divisors (see below), whose sum is σ = 170249744. Its totient is φ = 144419328.

The previous prime is 157271623. The next prime is 157271651. The reversal of 157271647 is 746172751.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157271647 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 (157277647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28833 + ... + 33850.

It is an arithmetic number, because the mean of its divisors is an integer number (21281218).

Almost surely, 2^157271647 is an apocalyptic number.

157271647 is a deficient number, since it is larger than the sum of its proper divisors (12978097).

157271647 is a wasteful number, since it uses less digits than its factorization.

157271647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62889.

The product of its digits is 82320, while the sum is 40.

The square root of 157271647 is about 12540.7992966956. The cubic root of 157271647 is about 539.7800281467.

The spelling of 157271647 in words is "one hundred fifty-seven million, two hundred seventy-one thousand, six hundred forty-seven".