131787553 has 8 divisors (see below), whose sum is σ = 146884320. Its totient is φ = 117506880.

The previous prime is 131787529. The next prime is 131787559. The reversal of 131787553 is 355787131.

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 131787553 - 2²¹ = 129690401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131787559) 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, 203683 + ... + 204328.

It is an arithmetic number, because the mean of its divisors is an integer number (18360540).

Almost surely, 2^131787553 is an apocalyptic number.

It is an amenable number.

131787553 is a deficient number, since it is larger than the sum of its proper divisors (15096767).

131787553 is a wasteful number, since it uses less digits than its factorization.

131787553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408047.

The product of its digits is 88200, while the sum is 40.

The square root of 131787553 is about 11479.8760010725. The cubic root of 131787553 is about 508.8910326241.

The spelling of 131787553 in words is "one hundred thirty-one million, seven hundred eighty-seven thousand, five hundred fifty-three".