22135537 has 2 divisors, whose sum is σ = 22135538. Its totient is φ = 22135536.

The previous prime is 22135517. The next prime is 22135541. The reversal of 22135537 is 73553122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22127616 + 7921 = 4704^2 + 89^2 .

It is a cyclic number.

It is not a de Polignac number, because 22135537 - 2⁷ = 22135409 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22135507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11067768 + 11067769.

It is an arithmetic number, because the mean of its divisors is an integer number (11067769).

Almost surely, 2^22135537 is an apocalyptic number.

It is an amenable number.

22135537 is a deficient number, since it is larger than the sum of its proper divisors (1).

22135537 is an equidigital number, since it uses as much as digits as its factorization.

22135537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 28.

The square root of 22135537 is about 4704.8418676933. The cubic root of 22135537 is about 280.7781796571.

Adding to 22135537 its reverse (73553122), we get a palindrome (95688659).

It can be divided in two parts, 2213 and 5537, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 22135537 in words is "twenty-two million, one hundred thirty-five thousand, five hundred thirty-seven".