55025985 has 16 divisors (see below), whose sum is σ = 100619136. Its totient is φ = 25154688.

The previous prime is 55025983. The next prime is 55025989. The reversal of 55025985 is 58952055.

It is not a de Polignac number, because 55025985 - 2¹ = 55025983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55025983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261924 + ... + 262133.

It is an arithmetic number, because the mean of its divisors is an integer number (6288696).

Almost surely, 2^55025985 is an apocalyptic number.

It is an amenable number.

55025985 is a deficient number, since it is larger than the sum of its proper divisors (45593151).

55025985 is a wasteful number, since it uses less digits than its factorization.

55025985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524072.

The product of its (nonzero) digits is 90000, while the sum is 39.

The square root of 55025985 is about 7417.9501885629. The cubic root of 55025985 is about 380.3551273859.

The spelling of 55025985 in words is "fifty-five million, twenty-five thousand, nine hundred eighty-five".