722051 has 8 divisors (see below), whose sum is σ = 807408. Its totient is φ = 640000.

The previous prime is 722047. The next prime is 722063. The reversal of 722051 is 150227.

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

It is a 10-Lehmer number, since φ(722051) divides (722051-1)¹⁰.

It is a cyclic number.

It is not a de Polignac number, because 722051 - 2² = 722047 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 722051.

It is not an unprimeable number, because it can be changed into a prime (722011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350 + ... + 1251.

It is an arithmetic number, because the mean of its divisors is an integer number (100926).

2⁷²²⁰⁵¹ is an apocalyptic number.

722051 is a deficient number, since it is larger than the sum of its proper divisors (85357).

722051 is a wasteful number, since it uses less digits than its factorization.

722051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 722051 is about 849.7358413060. The cubic root of 722051 is about 89.7131194439.

Adding to 722051 its reverse (150227), we get a palindrome (872278).

The spelling of 722051 in words is "seven hundred twenty-two thousand, fifty-one".