55025885 has 4 divisors (see below), whose sum is σ = 66031068. Its totient is φ = 44020704.

The previous prime is 55025809. The next prime is 55025897. The reversal of 55025885 is 58852055.

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 40729924 + 14295961 = 6382^2 + 3781^2 .

It is a cyclic number.

It is not a de Polignac number, because 55025885 - 2¹² = 55021789 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 5502584 + ... + 5502593.

It is an arithmetic number, because the mean of its divisors is an integer number (16507767).

Almost surely, 2^55025885 is an apocalyptic number.

It is an amenable number.

55025885 is a deficient number, since it is larger than the sum of its proper divisors (11005183).

55025885 is a wasteful number, since it uses less digits than its factorization.

55025885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11005182.

The product of its (nonzero) digits is 80000, while the sum is 38.

The square root of 55025885 is about 7417.9434481533. The cubic root of 55025885 is about 380.3548969764.

The spelling of 55025885 in words is "fifty-five million, twenty-five thousand, eight hundred eighty-five".