722451 has 8 divisors (see below), whose sum is σ = 967824. Its totient is φ = 479360.

The previous prime is 722431. The next prime is 722459. The reversal of 722451 is 154227.

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

It is a cyclic number.

It is not a de Polignac number, because 722451 - 2¹¹ = 720403 is a prime.

It is a d-powerful number, because it can be written as 7² + 2¹⁶ + 4⁶ + 2¹⁸ + 5⁸ + 1 .

It is not an unprimeable number, because it can be changed into a prime (722459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415 + ... + 1271.

It is an arithmetic number, because the mean of its divisors is an integer number (120978).

2⁷²²⁴⁵¹ is an apocalyptic number.

722451 is a deficient number, since it is larger than the sum of its proper divisors (245373).

722451 is a wasteful number, since it uses less digits than its factorization.

722451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141.

The product of its digits is 560, while the sum is 21.

The square root of 722451 is about 849.9711759819. The cubic root of 722451 is about 89.7296827353.

Adding to 722451 its reverse (154227), we get a palindrome (876678).

The spelling of 722451 in words is "seven hundred twenty-two thousand, four hundred fifty-one".