722145501 has 48 divisors (see below), whose sum is σ = 1345368960. Its totient is φ = 362194560.

The previous prime is 722145481. The next prime is 722145563. The reversal of 722145501 is 105541227.

It is not a de Polignac number, because 722145501 - 2¹³ = 722137309 is a prime.

It is a super-2 number, since 2×722145501² = 1042988249229082002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722145001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2131 + ... + 38063.

It is an arithmetic number, because the mean of its divisors is an integer number (28028520).

Almost surely, 2^722145501 is an apocalyptic number.

It is an amenable number.

722145501 is a deficient number, since it is larger than the sum of its proper divisors (623223459).

722145501 is a wasteful number, since it uses less digits than its factorization.

722145501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35986 (or 35983 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 722145501 is about 26872.7650419528. The cubic root of 722145501 is about 897.1703311471.

Adding to 722145501 its reverse (105541227), we get a palindrome (827686728).

The spelling of 722145501 in words is "seven hundred twenty-two million, one hundred forty-five thousand, five hundred one".