721445054 has 8 divisors (see below), whose sum is σ = 1180546488. Its totient is φ = 327929560.

The previous prime is 721445041. The next prime is 721445059. The reversal of 721445054 is 450544127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 721445054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721445059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16396457 + ... + 16396500.

It is an arithmetic number, because the mean of its divisors is an integer number (147568311).

Almost surely, 2^721445054 is an apocalyptic number.

721445054 is a deficient number, since it is larger than the sum of its proper divisors (459101434).

721445054 is a wasteful number, since it uses less digits than its factorization.

721445054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32792970.

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 721445054 is about 26859.7292242495. The cubic root of 721445054 is about 896.8801663743.

The spelling of 721445054 in words is "seven hundred twenty-one million, four hundred forty-five thousand, fifty-four".