321054545 has 16 divisors (see below), whose sum is σ = 446508288. Its totient is φ = 217049280.

The previous prime is 321054521. The next prime is 321054551. The reversal of 321054545 is 545450123.

It is a de Polignac number, because none of the positive numbers 2^k-321054545 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62114 + ... + 67083.

It is an arithmetic number, because the mean of its divisors is an integer number (27906768).

Almost surely, 2^321054545 is an apocalyptic number.

321054545 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

321054545 is a deficient number, since it is larger than the sum of its proper divisors (125453743).

321054545 is a wasteful number, since it uses less digits than its factorization.

321054545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129280.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 321054545 is about 17917.9950050222. The cubic root of 321054545 is about 684.7409075728.

The spelling of 321054545 in words is "three hundred twenty-one million, fifty-four thousand, five hundred forty-five".