55276840 has 16 divisors (see below), whose sum is σ = 124372980. Its totient is φ = 22110720.

The previous prime is 55276831. The next prime is 55276849. The reversal of 55276840 is 4867255.

It is a happy number.

55276840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55276831) and next prime (55276849).

It can be written as a sum of positive squares in 2 ways, for example, as 50722884 + 4553956 = 7122^2 + 2134^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55276840.

It is not an unprimeable number, because it can be changed into a prime (55276849) 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 3 ways as a sum of consecutive naturals, for example, 690921 + ... + 691000.

Almost surely, 2^55276840 is an apocalyptic number.

It is an amenable number.

55276840 is an abundant number, since it is smaller than the sum of its proper divisors (69096140).

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

55276840 is a wasteful number, since it uses less digits than its factorization.

55276840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381932 (or 1381928 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 55276840 is about 7434.8396082229. The cubic root of 55276840 is about 380.9322447789.

The spelling of 55276840 in words is "fifty-five million, two hundred seventy-six thousand, eight hundred forty".