22294537 has 2 divisors, whose sum is σ = 22294538. Its totient is φ = 22294536.

The previous prime is 22294501. The next prime is 22294553. The reversal of 22294537 is 73549222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19971961 + 2322576 = 4469^2 + 1524^2 .

It is a cyclic number.

It is not a de Polignac number, because 22294537 - 2¹⁹ = 21770249 is a prime.

It is not a weakly prime, because it can be changed into another prime (22291537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11147268 + 11147269.

It is an arithmetic number, because the mean of its divisors is an integer number (11147269).

Almost surely, 2^22294537 is an apocalyptic number.

It is an amenable number.

22294537 is a deficient number, since it is larger than the sum of its proper divisors (1).

22294537 is an equidigital number, since it uses as much as digits as its factorization.

22294537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The square root of 22294537 is about 4721.7091185290. The cubic root of 22294537 is about 281.4488547926.

Subtracting from 22294537 its sum of digits (34), we obtain a triangular number (22294503 = T₆₆₇₇).

The spelling of 22294537 in words is "twenty-two million, two hundred ninety-four thousand, five hundred thirty-seven".