55820895 has 32 divisors (see below), whose sum is σ = 96610752. Its totient is φ = 27359232.

The previous prime is 55820867. The next prime is 55820899. The reversal of 55820895 is 59802855.

It is not a de Polignac number, because 55820895 - 2⁷ = 55820767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55820899) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56647 + ... + 57623.

It is an arithmetic number, because the mean of its divisors is an integer number (3019086).

Almost surely, 2^55820895 is an apocalyptic number.

55820895 is a deficient number, since it is larger than the sum of its proper divisors (40789857).

55820895 is a wasteful number, since it uses less digits than its factorization.

55820895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291.

The product of its (nonzero) digits is 144000, while the sum is 42.

The square root of 55820895 is about 7471.3382335429. The cubic root of 55820895 is about 382.1779253012.

The spelling of 55820895 in words is "fifty-five million, eight hundred twenty thousand, eight hundred ninety-five".