22142551 has 8 divisors (see below), whose sum is σ = 23559984. Its totient is φ = 20737920.

The previous prime is 22142521. The next prime is 22142567. The reversal of 22142551 is 15524122.

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 22142551 - 2⁷ = 22142423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22142521) 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, 501 + ... + 6673.

It is an arithmetic number, because the mean of its divisors is an integer number (2944998).

Almost surely, 2^22142551 is an apocalyptic number.

22142551 is a deficient number, since it is larger than the sum of its proper divisors (1417433).

22142551 is a wasteful number, since it uses less digits than its factorization.

22142551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6401.

The product of its digits is 800, while the sum is 22.

The square root of 22142551 is about 4705.5872109653. The cubic root of 22142551 is about 280.8078328822.

Adding to 22142551 its reverse (15524122), we get a palindrome (37666673).

The spelling of 22142551 in words is "twenty-two million, one hundred forty-two thousand, five hundred fifty-one".