55226740 has 24 divisors (see below), whose sum is σ = 116750592. Its totient is φ = 21943200.

The previous prime is 55226737. The next prime is 55226741. The reversal of 55226740 is 4762255.

55226740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55226740² = 6099985622055200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55226741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6124 + ... + 12163.

It is an arithmetic number, because the mean of its divisors is an integer number (4864608).

Almost surely, 2^55226740 is an apocalyptic number.

It is an amenable number.

55226740 is an abundant number, since it is smaller than the sum of its proper divisors (61523852).

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

55226740 is a wasteful number, since it uses less digits than its factorization.

55226740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18447 (or 18445 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 55226740 is about 7431.4695720295. The cubic root of 55226740 is about 380.8171243888.

Adding to 55226740 its reverse (4762255), we get a palindrome (59988995).

The spelling of 55226740 in words is "fifty-five million, two hundred twenty-six thousand, seven hundred forty".