131544554 has 8 divisors (see below), whose sum is σ = 198339780. Its totient is φ = 65431296.

The previous prime is 131544547. The next prime is 131544557. The reversal of 131544554 is 455445131.

It can be written as a sum of positive squares in 2 ways, for example, as 126045529 + 5499025 = 11227^2 + 2345^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 131544554.

It is not an unprimeable number, because it can be changed into a prime (131544557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170009 + ... + 170780.

Almost surely, 2^131544554 is an apocalyptic number.

131544554 is a deficient number, since it is larger than the sum of its proper divisors (66795226).

131544554 is a wasteful number, since it uses less digits than its factorization.

131544554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340984.

The product of its digits is 24000, while the sum is 32.

The square root of 131544554 is about 11469.2874233755. The cubic root of 131544554 is about 508.5780640332.

Adding to 131544554 its reverse (455445131), we get a palindrome (586989685).

The spelling of 131544554 in words is "one hundred thirty-one million, five hundred forty-four thousand, five hundred fifty-four".