22249551 has 8 divisors (see below), whose sum is σ = 31227520. Its totient is φ = 14052312.

The previous prime is 22249547. The next prime is 22249553. The reversal of 22249551 is 15594222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22249551 - 2² = 22249547 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 (22249553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195115 + ... + 195228.

It is an arithmetic number, because the mean of its divisors is an integer number (3903440).

Almost surely, 2^22249551 is an apocalyptic number.

22249551 is a deficient number, since it is larger than the sum of its proper divisors (8977969).

22249551 is a wasteful number, since it uses less digits than its factorization.

22249551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390365.

The product of its digits is 7200, while the sum is 30.

The square root of 22249551 is about 4716.9429718834. The cubic root of 22249551 is about 281.2594244743.

The spelling of 22249551 in words is "twenty-two million, two hundred forty-nine thousand, five hundred fifty-one".