131520455 has 8 divisors (see below), whose sum is σ = 172172304. Its totient is φ = 95651200.

The previous prime is 131520439. The next prime is 131520461. The reversal of 131520455 is 554025131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131520455 - 2⁴ = 131520439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1195586 + ... + 1195695.

It is an arithmetic number, because the mean of its divisors is an integer number (21521538).

Almost surely, 2^131520455 is an apocalyptic number.

131520455 is a deficient number, since it is larger than the sum of its proper divisors (40651849).

131520455 is a wasteful number, since it uses less digits than its factorization.

131520455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391297.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 131520455 is about 11468.2367868823. The cubic root of 131520455 is about 508.5470049208.

Adding to 131520455 its reverse (554025131), we get a palindrome (685545586).

The spelling of 131520455 in words is "one hundred thirty-one million, five hundred twenty thousand, four hundred fifty-five".