321264045 has 24 divisors (see below), whose sum is σ = 589615416. Its totient is φ = 161261568.

The previous prime is 321264029. The next prime is 321264049. The reversal of 321264045 is 540462123.

321264045 is a `hidden beast` number, since 3 + 2 + 12 + 640 + 4 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 181764324 + 139499721 = 13482^2 + 11811^2 .

It is not a de Polignac number, because 321264045 - 2⁴ = 321264029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321264049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209212 + ... + 210741.

It is an arithmetic number, because the mean of its divisors is an integer number (24567309).

Almost surely, 2^321264045 is an apocalyptic number.

It is an amenable number.

321264045 is a deficient number, since it is larger than the sum of its proper divisors (268351371).

321264045 is a wasteful number, since it uses less digits than its factorization.

321264045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419981 (or 419978 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 321264045 is about 17923.8401298382. The cubic root of 321264045 is about 684.8898148025.

The spelling of 321264045 in words is "three hundred twenty-one million, two hundred sixty-four thousand, forty-five".