131533455 has 16 divisors (see below), whose sum is σ = 212625504. Its totient is φ = 69427200.

The previous prime is 131533433. The next prime is 131533489. The reversal of 131533455 is 554335131.

It is not a de Polignac number, because 131533455 - 2⁷ = 131533327 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43746 + ... + 46655.

It is an arithmetic number, because the mean of its divisors is an integer number (13289094).

Almost surely, 2^131533455 is an apocalyptic number.

131533455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131533455 is a deficient number, since it is larger than the sum of its proper divisors (81092049).

131533455 is an equidigital number, since it uses as much as digits as its factorization.

131533455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90506.

The product of its digits is 13500, while the sum is 30.

The square root of 131533455 is about 11468.8035557333. The cubic root of 131533455 is about 508.5637599653.

Adding to 131533455 its reverse (554335131), we get a palindrome (685868586).

The spelling of 131533455 in words is "one hundred thirty-one million, five hundred thirty-three thousand, four hundred fifty-five".