131661552 has 60 divisors (see below), whose sum is σ = 373873640. Its totient is φ = 39895680.

The previous prime is 131661529. The next prime is 131661553. The reversal of 131661552 is 255166131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131661553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5527 + ... + 17142.

Almost surely, 2^131661552 is an apocalyptic number.

131661552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131661552 is an abundant number, since it is smaller than the sum of its proper divisors (242212088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131661552 is a wasteful number, since it uses less digits than its factorization.

131661552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22702 (or 22685 counting only the distinct ones).

The product of its digits is 5400, while the sum is 30.

The square root of 131661552 is about 11474.3867810005. The cubic root of 131661552 is about 508.7287987269.

The spelling of 131661552 in words is "one hundred thirty-one million, six hundred sixty-one thousand, five hundred fifty-two".