55278652 has 48 divisors (see below), whose sum is σ = 114405984. Its totient is φ = 23040000.

The previous prime is 55278631. The next prime is 55278653. The reversal of 55278652 is 25687255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55278653) 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, 137652 + ... + 138052.

It is an arithmetic number, because the mean of its divisors is an integer number (2383458).

Almost surely, 2^55278652 is an apocalyptic number.

55278652 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55278652 is an abundant number, since it is smaller than the sum of its proper divisors (59127332).

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

55278652 is a wasteful number, since it uses less digits than its factorization.

55278652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 668 counting only the distinct ones).

The product of its digits is 168000, while the sum is 40.

The square root of 55278652 is about 7434.9614659391. The cubic root of 55278652 is about 380.9364071110.

The spelling of 55278652 in words is "fifty-five million, two hundred seventy-eight thousand, six hundred fifty-two".