55501885 has 4 divisors (see below), whose sum is σ = 66602268. Its totient is φ = 44401504.

The previous prime is 55501883. The next prime is 55501903. The reversal of 55501885 is 58810555.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15824484 + 39677401 = 3978^2 + 6299^2 .

It is a cyclic number.

It is not a de Polignac number, because 55501885 - 2¹ = 55501883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55501883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5550184 + ... + 5550193.

It is an arithmetic number, because the mean of its divisors is an integer number (16650567).

Almost surely, 2^55501885 is an apocalyptic number.

It is an amenable number.

55501885 is a deficient number, since it is larger than the sum of its proper divisors (11100383).

55501885 is a wasteful number, since it uses less digits than its factorization.

55501885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11100382.

The product of its (nonzero) digits is 40000, while the sum is 37.

The square root of 55501885 is about 7449.9587247179. The cubic root of 55501885 is about 381.4484996959.

The spelling of 55501885 in words is "fifty-five million, five hundred one thousand, eight hundred eighty-five".