22621037 has 2 divisors, whose sum is σ = 22621038. Its totient is φ = 22621036.

The previous prime is 22621007. The next prime is 22621051. The reversal of 22621037 is 73012622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20967241 + 1653796 = 4579^2 + 1286^2 .

It is a cyclic number.

It is not a de Polignac number, because 22621037 - 2⁶ = 22620973 is a prime.

It is a super-2 number, since 2×22621037² = 1023422629910738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22621007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11310518 + 11310519.

It is an arithmetic number, because the mean of its divisors is an integer number (11310519).

Almost surely, 2^22621037 is an apocalyptic number.

It is an amenable number.

22621037 is a deficient number, since it is larger than the sum of its proper divisors (1).

22621037 is an equidigital number, since it uses as much as digits as its factorization.

22621037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 22621037 is about 4756.1577980551. The cubic root of 22621037 is about 282.8161266509.

Adding to 22621037 its reverse (73012622), we get a palindrome (95633659).

The spelling of 22621037 in words is "twenty-two million, six hundred twenty-one thousand, thirty-seven".