22501013 has 8 divisors (see below), whose sum is σ = 24646680. Its totient is φ = 20446720.

The previous prime is 22500967. The next prime is 22501019. The reversal of 22501013 is 31010522.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5870929 + 16630084 = 2423^2 + 4078^2 .

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 22501013 - 2⁸ = 22500757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22501019) 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, 22328 + ... + 23313.

It is an arithmetic number, because the mean of its divisors is an integer number (3080835).

Almost surely, 2^22501013 is an apocalyptic number.

It is an amenable number.

22501013 is a deficient number, since it is larger than the sum of its proper divisors (2145667).

22501013 is a wasteful number, since it uses less digits than its factorization.

22501013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45687.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 22501013 is about 4743.5232686264. The cubic root of 22501013 is about 282.3150453540.

Adding to 22501013 its reverse (31010522), we get a palindrome (53511535).

The spelling of 22501013 in words is "twenty-two million, five hundred one thousand, thirteen".