22132551 has 16 divisors (see below), whose sum is σ = 33845504. Its totient is φ = 12602304.

The previous prime is 22132529. The next prime is 22132567. The reversal of 22132551 is 15523122.

It is not a de Polignac number, because 22132551 - 2¹¹ = 22130503 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22132501) 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, 4731 + ... + 8163.

It is an arithmetic number, because the mean of its divisors is an integer number (2115344).

Almost surely, 2^22132551 is an apocalyptic number.

22132551 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22132551 is a deficient number, since it is larger than the sum of its proper divisors (11712953).

22132551 is a wasteful number, since it uses less digits than its factorization.

22132551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3750.

The product of its digits is 600, while the sum is 21.

The square root of 22132551 is about 4704.5245243276. The cubic root of 22132551 is about 280.7655537855.

Adding to 22132551 its reverse (15523122), we get a palindrome (37655673).

The spelling of 22132551 in words is "twenty-two million, one hundred thirty-two thousand, five hundred fifty-one".