722545401 has 4 divisors (see below), whose sum is σ = 963393872. Its totient is φ = 481696932.

The previous prime is 722545381. The next prime is 722545507. The reversal of 722545401 is 104545227.

722545401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 722545401 - 2¹⁰ = 722544377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722585401) 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, 120424231 + ... + 120424236.

It is an arithmetic number, because the mean of its divisors is an integer number (240848468).

Almost surely, 2^722545401 is an apocalyptic number.

It is an amenable number.

722545401 is a deficient number, since it is larger than the sum of its proper divisors (240848471).

722545401 is a wasteful number, since it uses less digits than its factorization.

722545401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240848470.

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 722545401 is about 26880.2046309175. The cubic root of 722545401 is about 897.3359082175.

The spelling of 722545401 in words is "seven hundred twenty-two million, five hundred forty-five thousand, four hundred one".