157255571 has 18 divisors (see below), whose sum is σ = 181970172. Its totient is φ = 134754840.

The previous prime is 157255537. The next prime is 157255573. The reversal of 157255571 is 175552751.

It is not a de Polignac number, because 157255571 - 2¹⁰ = 157254547 is a prime.

It is a super-2 number, since 2×157255571² = 49458629221072082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157255573) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 790130 + ... + 790328.

It is an arithmetic number, because the mean of its divisors is an integer number (10109454).

Almost surely, 2^157255571 is an apocalyptic number.

157255571 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

157255571 is a deficient number, since it is larger than the sum of its proper divisors (24714601).

157255571 is an equidigital number, since it uses as much as digits as its factorization.

157255571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 229 counting only the distinct ones).

The product of its digits is 61250, while the sum is 38.

The square root of 157255571 is about 12540.1583323338. The cubic root of 157255571 is about 539.7616357672.

The spelling of 157255571 in words is "one hundred fifty-seven million, two hundred fifty-five thousand, five hundred seventy-one".