55033278 has 16 divisors (see below), whose sum is σ = 110562816. Its totient is φ = 18261720.

The previous prime is 55033261. The next prime is 55033283. The reversal of 55033278 is 87233055.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19228 + ... + 21903.

It is an arithmetic number, because the mean of its divisors is an integer number (6910176).

Almost surely, 2^55033278 is an apocalyptic number.

55033278 is an abundant number, since it is smaller than the sum of its proper divisors (55529538).

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

55033278 is a wasteful number, since it uses less digits than its factorization.

55033278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41359.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 55033278 is about 7418.4417501252. The cubic root of 55033278 is about 380.3719304012.

The spelling of 55033278 in words is "fifty-five million, thirty-three thousand, two hundred seventy-eight".