23222451 has 16 divisors (see below), whose sum is σ = 36210944. Its totient is φ = 12960864.

The previous prime is 23222431. The next prime is 23222461. The reversal of 23222451 is 15422232.

It is not a de Polignac number, because 23222451 - 2¹¹ = 23220403 is a prime.

It is a super-3 number, since 3×23222451³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (23222431) 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, 11956 + ... + 13761.

It is an arithmetic number, because the mean of its divisors is an integer number (2263184).

Almost surely, 2^23222451 is an apocalyptic number.

23222451 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23222451 is a deficient number, since it is larger than the sum of its proper divisors (12988493).

23222451 is a wasteful number, since it uses less digits than its factorization.

23222451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25770.

The product of its digits is 960, while the sum is 21.

The square root of 23222451 is about 4818.9678355432. The cubic root of 23222451 is about 285.3006000398.

Adding to 23222451 its reverse (15422232), we get a palindrome (38644683).

The spelling of 23222451 in words is "twenty-three million, two hundred twenty-two thousand, four hundred fifty-one".