22041557 has 4 divisors (see below), whose sum is σ = 22402956. Its totient is φ = 21680160.

The previous prime is 22041541. The next prime is 22041583. The reversal of 22041557 is 75514022.

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 872356 + 21169201 = 934^2 + 4601^2 .

It is a cyclic number.

It is not a de Polignac number, because 22041557 - 2⁴ = 22041541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22041517) 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, 180608 + ... + 180729.

It is an arithmetic number, because the mean of its divisors is an integer number (5600739).

Almost surely, 2^22041557 is an apocalyptic number.

It is an amenable number.

22041557 is a deficient number, since it is larger than the sum of its proper divisors (361399).

22041557 is an equidigital number, since it uses as much as digits as its factorization.

22041557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361398.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 22041557 is about 4694.8436608688. The cubic root of 22041557 is about 280.3802529230.

Adding to 22041557 its reverse (75514022), we get a palindrome (97555579).

The spelling of 22041557 in words is "twenty-two million, forty-one thousand, five hundred fifty-seven".