331645552 has 20 divisors (see below), whose sum is σ = 734358256. Its totient is φ = 142133760.

The previous prime is 331645543. The next prime is 331645591. The reversal of 331645552 is 255546133.

It is a super-2 number, since 2×331645552² = 219977544322769408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1480449 + ... + 1480672.

Almost surely, 2^331645552 is an apocalyptic number.

It is an amenable number.

331645552 is an abundant number, since it is smaller than the sum of its proper divisors (402712704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331645552 is a wasteful number, since it uses less digits than its factorization.

331645552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2961136 (or 2961130 counting only the distinct ones).

The product of its digits is 54000, while the sum is 34.

The square root of 331645552 is about 18211.1381302762. The cubic root of 331645552 is about 692.1890514468.

The spelling of 331645552 in words is "three hundred thirty-one million, six hundred forty-five thousand, five hundred fifty-two".