131553445 has 8 divisors (see below), whose sum is σ = 164727936. Its totient is φ = 100666896.

The previous prime is 131553439. The next prime is 131553467. The reversal of 131553445 is 544355131.

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

It is a cyclic number.

It is not a de Polignac number, because 131553445 - 2¹⁵ = 131520677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571857 + ... + 572086.

It is an arithmetic number, because the mean of its divisors is an integer number (20590992).

Almost surely, 2^131553445 is an apocalyptic number.

It is an amenable number.

131553445 is a deficient number, since it is larger than the sum of its proper divisors (33174491).

131553445 is a wasteful number, since it uses less digits than its factorization.

131553445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143971.

The product of its digits is 18000, while the sum is 31.

The square root of 131553445 is about 11469.6750171921. The cubic root of 131553445 is about 508.5895219146.

The spelling of 131553445 in words is "one hundred thirty-one million, five hundred fifty-three thousand, four hundred forty-five".