22254451 has 2 divisors, whose sum is σ = 22254452. Its totient is φ = 22254450.

The previous prime is 22254443. The next prime is 22254461. The reversal of 22254451 is 15445222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22254451 - 2³ = 22254443 is a prime.

It is a super-2 number, since 2×22254451² = 990521178622802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22254461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11127225 + 11127226.

It is an arithmetic number, because the mean of its divisors is an integer number (11127226).

Almost surely, 2^22254451 is an apocalyptic number.

22254451 is a deficient number, since it is larger than the sum of its proper divisors (1).

22254451 is an equidigital number, since it uses as much as digits as its factorization.

22254451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3200, while the sum is 25.

The square root of 22254451 is about 4717.4623474915. The cubic root of 22254451 is about 281.2800701347.

Adding to 22254451 its reverse (15445222), we get a palindrome (37699673).

It can be divided in two parts, 2225 and 4451, that multiplied together give a triangular number (9903475 = T₄₄₅₀).

The spelling of 22254451 in words is "twenty-two million, two hundred fifty-four thousand, four hundred fifty-one".