22513465 has 8 divisors (see below), whose sum is σ = 29094408. Its totient is φ = 16625280.

The previous prime is 22513451. The next prime is 22513487. The reversal of 22513465 is 56431522.

It can be written as a sum of positive squares in 4 ways, for example, as 946729 + 21566736 = 973^2 + 4644^2 .

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

It is not a de Polignac number, because 22513465 - 2⁵ = 22513433 is a prime.

It is a super-2 number, since 2×22513465² = 1013712212612450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173116 + ... + 173245.

It is an arithmetic number, because the mean of its divisors is an integer number (3636801).

Almost surely, 2^22513465 is an apocalyptic number.

It is an amenable number.

22513465 is a deficient number, since it is larger than the sum of its proper divisors (6580943).

22513465 is a wasteful number, since it uses less digits than its factorization.

22513465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346379.

The product of its digits is 7200, while the sum is 28.

The square root of 22513465 is about 4744.8356135908. The cubic root of 22513465 is about 282.3671132124.

Adding to 22513465 its reverse (56431522), we get a palindrome (78944987).

The spelling of 22513465 in words is "twenty-two million, five hundred thirteen thousand, four hundred sixty-five".