321396554 has 16 divisors (see below), whose sum is σ = 488339520. Its totient is φ = 158630400.

The previous prime is 321396529. The next prime is 321396557. The reversal of 321396554 is 455693123.

It is not an unprimeable number, because it can be changed into a prime (321396557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45962 + ... + 52490.

It is an arithmetic number, because the mean of its divisors is an integer number (30521220).

Almost surely, 2^321396554 is an apocalyptic number.

321396554 is a deficient number, since it is larger than the sum of its proper divisors (166942966).

321396554 is a wasteful number, since it uses less digits than its factorization.

321396554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6845.

The product of its digits is 97200, while the sum is 38.

The square root of 321396554 is about 17927.5361943576. The cubic root of 321396554 is about 684.9839653838.

The spelling of 321396554 in words is "three hundred twenty-one million, three hundred ninety-six thousand, five hundred fifty-four".