55278032 has 10 divisors (see below), whose sum is σ = 107101218. Its totient is φ = 27639008.

The previous prime is 55278029. The next prime is 55278043. The reversal of 55278032 is 23087255.

It can be written as a sum of positive squares in only one way, i.e., 37503376 + 17774656 = 6124^2 + 4216^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55278032.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1727423 + ... + 1727454.

Almost surely, 2^55278032 is an apocalyptic number.

It is an amenable number.

55278032 is a deficient number, since it is larger than the sum of its proper divisors (51823186).

55278032 is a wasteful number, since it uses less digits than its factorization.

55278032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3454885 (or 3454879 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 55278032 is about 7434.9197709188. The cubic root of 55278032 is about 380.9349829237.

The spelling of 55278032 in words is "fifty-five million, two hundred seventy-eight thousand, thirty-two".