722135541 has 4 divisors (see below), whose sum is σ = 962847392. Its totient is φ = 481423692.

The previous prime is 722135509. The next prime is 722135543. The reversal of 722135541 is 145531227.

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 722135541 - 2⁵ = 722135509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 722135499 and 722135508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722135543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120355921 + ... + 120355926.

It is an arithmetic number, because the mean of its divisors is an integer number (240711848).

Almost surely, 2^722135541 is an apocalyptic number.

It is an amenable number.

722135541 is a deficient number, since it is larger than the sum of its proper divisors (240711851).

722135541 is a wasteful number, since it uses less digits than its factorization.

722135541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240711850.

The product of its digits is 8400, while the sum is 30.

The square root of 722135541 is about 26872.5797235770. The cubic root of 722135541 is about 897.1662064670.

Adding to 722135541 its reverse (145531227), we get a palindrome (867666768).

The spelling of 722135541 in words is "seven hundred twenty-two million, one hundred thirty-five thousand, five hundred forty-one".