321690054 has 32 divisors (see below), whose sum is σ = 744606720. Its totient is φ = 90747072.

The previous prime is 321690053. The next prime is 321690071. The reversal of 321690054 is 450096123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321690053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45159 + ... + 51794.

It is an arithmetic number, because the mean of its divisors is an integer number (23268960).

Almost surely, 2^321690054 is an apocalyptic number.

321690054 is an abundant number, since it is smaller than the sum of its proper divisors (422916666).

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

321690054 is a wasteful number, since it uses less digits than its factorization.

321690054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97044.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 321690054 is about 17935.7200580295. The cubic root of 321690054 is about 685.1924115384.

The spelling of 321690054 in words is "three hundred twenty-one million, six hundred ninety thousand, fifty-four".