22151423 has 8 divisors (see below), whose sum is σ = 25349760. Its totient is φ = 18961560.

The previous prime is 22151417. The next prime is 22151431. The reversal of 22151423 is 32415122.

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

It is a cyclic number.

It is not a de Polignac number, because 22151423 - 2⁸ = 22151167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22151395 and 22151404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22151443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5168 + ... + 8426.

It is an arithmetic number, because the mean of its divisors is an integer number (3168720).

Almost surely, 2^22151423 is an apocalyptic number.

22151423 is a deficient number, since it is larger than the sum of its proper divisors (3198337).

22151423 is an equidigital number, since it uses as much as digits as its factorization.

22151423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4237.

The product of its digits is 480, while the sum is 20.

The square root of 22151423 is about 4706.5298256784. The cubic root of 22151423 is about 280.8453322415.

Adding to 22151423 its reverse (32415122), we get a palindrome (54566545).

The spelling of 22151423 in words is "twenty-two million, one hundred fifty-one thousand, four hundred twenty-three".