22372155 has 48 divisors (see below), whose sum is σ = 42194880. Its totient is φ = 10900224.

The previous prime is 22372127. The next prime is 22372159. The reversal of 22372155 is 55127322.

It is not a de Polignac number, because 22372155 - 2⁷ = 22372027 is a prime.

22372155 is a Rhonda number in base 10.

Its product of digits (4200) is a multiple of the sum of its prime factors (420).

It is not an unprimeable number, because it can be changed into a prime (22372159) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 97581 + ... + 97809.

It is an arithmetic number, because the mean of its divisors is an integer number (879060).

Almost surely, 2^22372155 is an apocalyptic number.

22372155 is a deficient number, since it is larger than the sum of its proper divisors (19822725).

22372155 is a wasteful number, since it uses less digits than its factorization.

22372155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 417 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 22372155 is about 4729.9212467017. The cubic root of 22372155 is about 281.7750960682.

Adding to 22372155 its reverse (55127322), we get a palindrome (77499477).

The spelling of 22372155 in words is "twenty-two million, three hundred seventy-two thousand, one hundred fifty-five".