22242451 has 16 divisors (see below), whose sum is σ = 27929088. Its totient is φ = 17208000.

The previous prime is 22242433. The next prime is 22242461. The reversal of 22242451 is 15424222.

22242451 = 499² + 500² + ... + 575².

It is a cyclic number.

It is not a de Polignac number, because 22242451 - 2⁵ = 22242419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22242401) 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, 10671 + ... + 12583.

It is an arithmetic number, because the mean of its divisors is an integer number (1745568).

Almost surely, 2^22242451 is an apocalyptic number.

22242451 is a deficient number, since it is larger than the sum of its proper divisors (5686637).

22242451 is a wasteful number, since it uses less digits than its factorization.

22242451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082.

The product of its digits is 1280, while the sum is 22.

The square root of 22242451 is about 4716.1903057447. The cubic root of 22242451 is about 281.2295039550.

Adding to 22242451 its reverse (15424222), we get a palindrome (37666673).

The spelling of 22242451 in words is "twenty-two million, two hundred forty-two thousand, four hundred fifty-one".