321552045 has 32 divisors (see below), whose sum is σ = 581034240. Its totient is φ = 168678720.

The previous prime is 321552037. The next prime is 321552103. The reversal of 321552045 is 540255123.

It is a happy number.

It is not a de Polignac number, because 321552045 - 2³ = 321552037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11289 + ... + 27758.

It is an arithmetic number, because the mean of its divisors is an integer number (18157320).

Almost surely, 2^321552045 is an apocalyptic number.

It is an amenable number.

321552045 is a deficient number, since it is larger than the sum of its proper divisors (259482195).

321552045 is a wasteful number, since it uses less digits than its factorization.

321552045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39122 (or 39116 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 321552045 is about 17931.8723227665. The cubic root of 321552045 is about 685.0944121914.

The spelling of 321552045 in words is "three hundred twenty-one million, five hundred fifty-two thousand, forty-five".