131571455 has 4 divisors (see below), whose sum is σ = 157885752. Its totient is φ = 105257160.

The previous prime is 131571383. The next prime is 131571457. The reversal of 131571455 is 554175131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 131571455 - 2⁸ = 131571199 is a prime.

It is a super-2 number, since 2×131571455² = 34622095541634050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131571457) 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, 13157141 + ... + 13157150.

It is an arithmetic number, because the mean of its divisors is an integer number (39471438).

Almost surely, 2^131571455 is an apocalyptic number.

131571455 is a deficient number, since it is larger than the sum of its proper divisors (26314297).

131571455 is an equidigital number, since it uses as much as digits as its factorization.

131571455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26314296.

The product of its digits is 10500, while the sum is 32.

The square root of 131571455 is about 11470.4601041109. The cubic root of 131571455 is about 508.6127299204.

The spelling of 131571455 in words is "one hundred thirty-one million, five hundred seventy-one thousand, four hundred fifty-five".