55294940 has 24 divisors (see below), whose sum is σ = 122231760. Its totient is φ = 20953728.

The previous prime is 55294927. The next prime is 55294949. The reversal of 55294940 is 4949255.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 55294894 and 55294903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55294949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72377 + ... + 73136.

It is an arithmetic number, because the mean of its divisors is an integer number (5092990).

Almost surely, 2^55294940 is an apocalyptic number.

It is an amenable number.

55294940 is an abundant number, since it is smaller than the sum of its proper divisors (66936820).

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

55294940 is a wasteful number, since it uses less digits than its factorization.

55294940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145541 (or 145539 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 55294940 is about 7436.0567507248. The cubic root of 55294940 is about 380.9738180744.

The spelling of 55294940 in words is "fifty-five million, two hundred ninety-four thousand, nine hundred forty".