22500051 has 16 divisors (see below), whose sum is σ = 35084544. Its totient is φ = 12557664.

The previous prime is 22500029. The next prime is 22500053. The reversal of 22500051 is 15000522.

It is not a de Polignac number, because 22500051 - 2⁵ = 22500019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22500051.

It is not an unprimeable number, because it can be changed into a prime (22500053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11556 + ... + 13361.

It is an arithmetic number, because the mean of its divisors is an integer number (2192784).

Almost surely, 2^22500051 is an apocalyptic number.

22500051 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22500051 is a deficient number, since it is larger than the sum of its proper divisors (12584493).

22500051 is a wasteful number, since it uses less digits than its factorization.

22500051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24970.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 22500051 is about 4743.4218661215. The cubic root of 22500051 is about 282.3110219656.

Adding to 22500051 its reverse (15000522), we get a palindrome (37500573).

The spelling of 22500051 in words is "twenty-two million, five hundred thousand, fifty-one".