55800447 has 16 divisors (see below), whose sum is σ = 75271680. Its totient is φ = 36768032.

The previous prime is 55800431. The next prime is 55800487. The reversal of 55800447 is 74400855.

It is a cyclic number.

It is not a de Polignac number, because 55800447 - 2⁴ = 55800431 is a prime.

It is a super-2 number, since 2×55800447² = 6227379770799618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55800487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155254 + ... + 155612.

It is an arithmetic number, because the mean of its divisors is an integer number (4704480).

Almost surely, 2^55800447 is an apocalyptic number.

55800447 is a deficient number, since it is larger than the sum of its proper divisors (19471233).

55800447 is a wasteful number, since it uses less digits than its factorization.

55800447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822.

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 55800447 is about 7469.9696786533. The cubic root of 55800447 is about 382.1312538375.

The spelling of 55800447 in words is "fifty-five million, eight hundred thousand, four hundred forty-seven".