22507033 has 4 divisors (see below), whose sum is σ = 22931748. Its totient is φ = 22082320.

The previous prime is 22507013. The next prime is 22507057. The reversal of 22507033 is 33070522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6801664 + 15705369 = 2608^2 + 3963^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22507033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22506995 and 22507013.

It is not an unprimeable number, because it can be changed into a prime (22507013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212278 + ... + 212383.

It is an arithmetic number, because the mean of its divisors is an integer number (5732937).

Almost surely, 2^22507033 is an apocalyptic number.

It is an amenable number.

22507033 is a deficient number, since it is larger than the sum of its proper divisors (424715).

22507033 is an equidigital number, since it uses as much as digits as its factorization.

22507033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424714.

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 22507033 is about 4744.1577756226. The cubic root of 22507033 is about 282.3402202951.

Adding to 22507033 its reverse (33070522), we get a palindrome (55577555).

The spelling of 22507033 in words is "twenty-two million, five hundred seven thousand, thirty-three".