157813227 has 48 divisors (see below), whose sum is σ = 283596768. Its totient is φ = 83082240.

The previous prime is 157813213. The next prime is 157813231. The reversal of 157813227 is 722318751.

It is a de Polignac number, because none of the positive numbers 2^k-157813227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157813191 and 157813200.

It is not an unprimeable number, because it can be changed into a prime (157813247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18273 + ... + 25485.

It is an arithmetic number, because the mean of its divisors is an integer number (5908266).

Almost surely, 2^157813227 is an apocalyptic number.

157813227 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

157813227 is a deficient number, since it is larger than the sum of its proper divisors (125783541).

157813227 is a wasteful number, since it uses less digits than its factorization.

157813227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7260 (or 7257 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 157813227 is about 12562.3734620493. The cubic root of 157813227 is about 540.3989130582.

The spelling of 157813227 in words is "one hundred fifty-seven million, eight hundred thirteen thousand, two hundred twenty-seven".