22251057 has 8 divisors (see below), whose sum is σ = 30074784. Its totient is φ = 14630688.

The previous prime is 22251049. The next prime is 22251067. The reversal of 22251057 is 75015222.

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

It is not a de Polignac number, because 22251057 - 2³ = 22251049 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (22251017) 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, 50583 + ... + 51020.

It is an arithmetic number, because the mean of its divisors is an integer number (3759348).

Almost surely, 2^22251057 is an apocalyptic number.

It is an amenable number.

22251057 is a deficient number, since it is larger than the sum of its proper divisors (7823727).

22251057 is a wasteful number, since it uses less digits than its factorization.

22251057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101679.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 22251057 is about 4717.1026064736. The cubic root of 22251057 is about 281.2657701775.

Adding to 22251057 its reverse (75015222), we get a palindrome (97266279).

The spelling of 22251057 in words is "twenty-two million, two hundred fifty-one thousand, fifty-seven".