320455552 has 16 divisors (see below), whose sum is σ = 638407800. Its totient is φ = 160227712.

The previous prime is 320455537. The next prime is 320455561. The reversal of 320455552 is 255554023.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

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 as a sum of consecutive naturals, namely, 1251652 + ... + 1251907.

Almost surely, 2^320455552 is an apocalyptic number.

320455552 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

320455552 is a deficient number, since it is larger than the sum of its proper divisors (317952248).

320455552 is an equidigital number, since it uses as much as digits as its factorization.

320455552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503573 (or 2503561 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 31.

The square root of 320455552 is about 17901.2723570142. The cubic root of 320455552 is about 684.3148010045.

The spelling of 320455552 in words is "three hundred twenty million, four hundred fifty-five thousand, five hundred fifty-two".