722538541 has 4 divisors (see below), whose sum is σ = 727736800. Its totient is φ = 717340284.

The previous prime is 722538533. The next prime is 722538563. The reversal of 722538541 is 145835227.

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: 145835227 = 467 ⋅312281.

It is a cyclic number.

It is not a de Polignac number, because 722538541 - 2³ = 722538533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 722538541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722538521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2598921 + ... + 2599198.

It is an arithmetic number, because the mean of its divisors is an integer number (181934200).

Almost surely, 2^722538541 is an apocalyptic number.

It is an amenable number.

722538541 is a deficient number, since it is larger than the sum of its proper divisors (5198259).

722538541 is a wasteful number, since it uses less digits than its factorization.

722538541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5198258.

The product of its digits is 67200, while the sum is 37.

The square root of 722538541 is about 26880.0770274194. The cubic root of 722538541 is about 897.3330683757. Note that the first 3 decimals are identical.

The spelling of 722538541 in words is "seven hundred twenty-two million, five hundred thirty-eight thousand, five hundred forty-one".