132657561 has 16 divisors (see below), whose sum is σ = 196710720. Its totient is φ = 88356960.

The previous prime is 132657559. The next prime is 132657631. The reversal of 132657561 is 165756231.

132657561 is a `hidden beast` number, since 1 + 3 + 26 + 575 + 61 = 666.

It is not a de Polignac number, because 132657561 - 2¹ = 132657559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (132657461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47541 + ... + 50253.

It is an arithmetic number, because the mean of its divisors is an integer number (12294420).

Almost surely, 2^132657561 is an apocalyptic number.

It is an amenable number.

132657561 is a deficient number, since it is larger than the sum of its proper divisors (64053159).

132657561 is a wasteful number, since it uses less digits than its factorization.

132657561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4533 (or 4527 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 132657561 is about 11517.7064123028. The cubic root of 132657561 is about 510.0084081659.

The spelling of 132657561 in words is "one hundred thirty-two million, six hundred fifty-seven thousand, five hundred sixty-one".