131557550 has 48 divisors (see below), whose sum is σ = 250430400. Its totient is φ = 51408000.

The previous prime is 131557513. The next prime is 131557567. The reversal of 131557550 is 55755131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 550331 + ... + 550569.

It is an arithmetic number, because the mean of its divisors is an integer number (5217300).

Almost surely, 2^131557550 is an apocalyptic number.

131557550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131557550 is a deficient number, since it is larger than the sum of its proper divisors (118872850).

131557550 is a wasteful number, since it uses less digits than its factorization.

131557550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 13125, while the sum is 32.

The square root of 131557550 is about 11469.8539659405. The cubic root of 131557550 is about 508.5948118769.

The spelling of 131557550 in words is "one hundred thirty-one million, five hundred fifty-seven thousand, five hundred fifty".