22054537 has 2 divisors, whose sum is σ = 22054538. Its totient is φ = 22054536.

The previous prime is 22054531. The next prime is 22054567. The reversal of 22054537 is 73545022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11999296 + 10055241 = 3464^2 + 3171^2 .

It is a cyclic number.

It is not a de Polignac number, because 22054537 - 2²³ = 13665929 is a prime.

It is equal to p_1392535 and since 22054537 and 1392535 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (22054531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11027268 + 11027269.

It is an arithmetic number, because the mean of its divisors is an integer number (11027269).

Almost surely, 2^22054537 is an apocalyptic number.

It is an amenable number.

22054537 is a deficient number, since it is larger than the sum of its proper divisors (1).

22054537 is an equidigital number, since it uses as much as digits as its factorization.

22054537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 22054537 is about 4696.2258250642. The cubic root of 22054537 is about 280.4352796094.

Adding to 22054537 its reverse (73545022), we get a palindrome (95599559).

The spelling of 22054537 in words is "twenty-two million, fifty-four thousand, five hundred thirty-seven".