157271639 has 8 divisors (see below), whose sum is σ = 182785920. Its totient is φ = 132519096.

The previous prime is 157271623. The next prime is 157271651. The reversal of 157271639 is 936172751.

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

It is a cyclic number.

It is not a de Polignac number, because 157271639 - 2⁴ = 157271623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157271596 and 157271605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157271659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189989 + ... + 190814.

It is an arithmetic number, because the mean of its divisors is an integer number (22848240).

Almost surely, 2^157271639 is an apocalyptic number.

157271639 is a deficient number, since it is larger than the sum of its proper divisors (25514281).

157271639 is an equidigital number, since it uses as much as digits as its factorization.

157271639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380869.

The product of its digits is 79380, while the sum is 41.

The square root of 157271639 is about 12540.7989777366. The cubic root of 157271639 is about 539.7800189943.

The spelling of 157271639 in words is "one hundred fifty-seven million, two hundred seventy-one thousand, six hundred thirty-nine".