22250477 has 4 divisors (see below), whose sum is σ = 22563936. Its totient is φ = 21937020.

The previous prime is 22250471. The next prime is 22250483. The reversal of 22250477 is 77405222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (22250471) and next prime (22250483).

It is a cyclic number.

It is not a de Polignac number, because 22250477 - 2²⁴ = 5473261 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 (22250471) 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, 156623 + ... + 156764.

It is an arithmetic number, because the mean of its divisors is an integer number (5640984).

Almost surely, 2^22250477 is an apocalyptic number.

It is an amenable number.

22250477 is a deficient number, since it is larger than the sum of its proper divisors (313459).

22250477 is an equidigital number, since it uses as much as digits as its factorization.

22250477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313458.

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 22250477 is about 4717.0411276562. The cubic root of 22250477 is about 281.2633263151.

Adding to 22250477 its reverse (77405222), we get a palindrome (99655699).

The spelling of 22250477 in words is "twenty-two million, two hundred fifty thousand, four hundred seventy-seven".