131253554 has 4 divisors (see below), whose sum is σ = 196880334. Its totient is φ = 65626776.

The previous prime is 131253553. The next prime is 131253557. The reversal of 131253554 is 455352131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 455352131 = 13 ⋅35027087.

It can be written as a sum of positive squares in only one way, i.e., 66015625 + 65237929 = 8125^2 + 8077^2 .

It is not an unprimeable number, because it can be changed into a prime (131253553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32813387 + ... + 32813390.

Almost surely, 2^131253554 is an apocalyptic number.

131253554 is a deficient number, since it is larger than the sum of its proper divisors (65626780).

131253554 is an equidigital number, since it uses as much as digits as its factorization.

131253554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65626779.

The product of its digits is 9000, while the sum is 29.

The square root of 131253554 is about 11456.5943456160. The cubic root of 131253554 is about 508.2027653789.

The spelling of 131253554 in words is "one hundred thirty-one million, two hundred fifty-three thousand, five hundred fifty-four".