722251601 has 4 divisors (see below), whose sum is σ = 727765104. Its totient is φ = 716738100.

The previous prime is 722251571. The next prime is 722251631. The reversal of 722251601 is 106152227.

722251601 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, and also an emirpimes, since its reverse is a distinct semiprime: 106152227 = 643 ⋅165089.

It is an interprime number because it is at equal distance from previous prime (722251571) and next prime (722251631).

It is a cyclic number.

It is not a de Polignac number, because 722251601 - 2²² = 718057297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722251631) 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, 2756555 + ... + 2756816.

It is an arithmetic number, because the mean of its divisors is an integer number (181941276).

Almost surely, 2^722251601 is an apocalyptic number.

It is an amenable number.

722251601 is a deficient number, since it is larger than the sum of its proper divisors (5513503).

722251601 is a wasteful number, since it uses less digits than its factorization.

722251601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5513502.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 722251601 is about 26874.7390871056. The cubic root of 722251601 is about 897.2142674040.

The spelling of 722251601 in words is "seven hundred twenty-two million, two hundred fifty-one thousand, six hundred one".