55093940 has 48 divisors (see below), whose sum is σ = 133648704. Its totient is φ = 18854400.

The previous prime is 55093931. The next prime is 55093943. The reversal of 55093940 is 4939055.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 55093940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55093943) 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, 3626 + ... + 11105.

It is an arithmetic number, because the mean of its divisors is an integer number (2784348).

Almost surely, 2^55093940 is an apocalyptic number.

It is an amenable number.

55093940 is an abundant number, since it is smaller than the sum of its proper divisors (78554764).

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

55093940 is a wasteful number, since it uses less digits than its factorization.

55093940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14768 (or 14766 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 55093940 is about 7422.5292185346. The cubic root of 55093940 is about 380.5116376840.

It can be divided in two parts, 5509 and 3940, that added together give a palindrome (9449).

The spelling of 55093940 in words is "fifty-five million, ninety-three thousand, nine hundred forty".