131355553 has 16 divisors (see below), whose sum is σ = 159989760. Its totient is φ = 105397776.

The previous prime is 131355547. The next prime is 131355563. The reversal of 131355553 is 355553131.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-131355553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131355503) 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, 1113 + ... + 16246.

It is an arithmetic number, because the mean of its divisors is an integer number (9999360).

Almost surely, 2^131355553 is an apocalyptic number.

It is an amenable number.

131355553 is a deficient number, since it is larger than the sum of its proper divisors (28634207).

131355553 is a wasteful number, since it uses less digits than its factorization.

131355553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17436.

The product of its digits is 16875, while the sum is 31.

The square root of 131355553 is about 11461.0450221609. The cubic root of 131355553 is about 508.3343751539.

The spelling of 131355553 in words is "one hundred thirty-one million, three hundred fifty-five thousand, five hundred fifty-three".