54642222 has 16 divisors (see below), whose sum is σ = 121427280. Its totient is φ = 18214056.

The previous prime is 54642193. The next prime is 54642251. The reversal of 54642222 is 22224645.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (54642193) and next prime (54642251).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505893 + ... + 506000.

It is an arithmetic number, because the mean of its divisors is an integer number (7589205).

Almost surely, 2^54642222 is an apocalyptic number.

54642222 is an abundant number, since it is smaller than the sum of its proper divisors (66785058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54642222 is a wasteful number, since it uses less digits than its factorization.

54642222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011904 (or 1011898 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 54642222 is about 7392.0377434101. The cubic root of 54642222 is about 379.4688377605.

Adding to 54642222 its reverse (22224645), we get a palindrome (76866867).

The spelling of 54642222 in words is "fifty-four million, six hundred forty-two thousand, two hundred twenty-two".