157272639 has 8 divisors (see below), whose sum is σ = 209924400. Its totient is φ = 104734656.

The previous prime is 157272623. The next prime is 157272649. The reversal of 157272639 is 936272751.

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

It is not a de Polignac number, because 157272639 - 2⁴ = 157272623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157272639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157272649) 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, 25164 + ... + 30785.

It is an arithmetic number, because the mean of its divisors is an integer number (26240550).

Almost surely, 2^157272639 is an apocalyptic number.

157272639 is a deficient number, since it is larger than the sum of its proper divisors (52651761).

157272639 is an equidigital number, since it uses as much as digits as its factorization.

157272639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56889.

The product of its digits is 158760, while the sum is 42.

The square root of 157272639 is about 12540.8388475413. The cubic root of 157272639 is about 539.7811630422.

The spelling of 157272639 in words is "one hundred fifty-seven million, two hundred seventy-two thousand, six hundred thirty-nine".