55021624265 has 4 divisors (see below), whose sum is σ = 66025949124. Its totient is φ = 44017299408.

The previous prime is 55021624247. The next prime is 55021624267. The reversal of 55021624265 is 56242612055.

It is a happy number.

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 43655505721 + 11366118544 = 208939^2 + 106612^2 .

It is a cyclic number.

It is not a de Polignac number, because 55021624265 - 2²⁴ = 55004847049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55021624267) 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, 5502162422 + ... + 5502162431.

It is an arithmetic number, because the mean of its divisors is an integer number (16506487281).

Almost surely, 2^55021624265 is an apocalyptic number.

It is an amenable number.

55021624265 is a deficient number, since it is larger than the sum of its proper divisors (11004324859).

55021624265 is a wasteful number, since it uses less digits than its factorization.

55021624265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11004324858.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 55021624265 in words is "fifty-five billion, twenty-one million, six hundred twenty-four thousand, two hundred sixty-five".