131575577 has 8 divisors (see below), whose sum is σ = 151331136. Its totient is φ = 112059792.

The previous prime is 131575559. The next prime is 131575579. The reversal of 131575577 is 775575131.

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 131575577 - 2²⁶ = 64466713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131575579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58763 + ... + 60960.

It is an arithmetic number, because the mean of its divisors is an integer number (18916392).

Almost surely, 2^131575577 is an apocalyptic number.

It is an amenable number.

131575577 is a deficient number, since it is larger than the sum of its proper divisors (19755559).

131575577 is a wasteful number, since it uses less digits than its factorization.

131575577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119887.

The product of its digits is 128625, while the sum is 41.

The square root of 131575577 is about 11470.6397816338. The cubic root of 131575577 is about 508.6180413049.

The spelling of 131575577 in words is "one hundred thirty-one million, five hundred seventy-five thousand, five hundred seventy-seven".