157056727 has 4 divisors (see below), whose sum is σ = 166295376. Its totient is φ = 147818080.

The previous prime is 157056701. The next prime is 157056737. The reversal of 157056727 is 727650751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 727650751 = 79 ⋅9210769.

It is a cyclic number.

It is not a de Polignac number, because 157056727 - 2²³ = 148668119 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157056727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157056737) 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, 4619299 + ... + 4619332.

It is an arithmetic number, because the mean of its divisors is an integer number (41573844).

Almost surely, 2^157056727 is an apocalyptic number.

157056727 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

157056727 is a deficient number, since it is larger than the sum of its proper divisors (9238649).

157056727 is an equidigital number, since it uses as much as digits as its factorization.

157056727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9238648.

The product of its (nonzero) digits is 102900, while the sum is 40.

The square root of 157056727 is about 12532.2275354384. The cubic root of 157056727 is about 539.5340367672.

The spelling of 157056727 in words is "one hundred fifty-seven million, fifty-six thousand, seven hundred twenty-seven".