55210481 has 2 divisors, whose sum is σ = 55210482. Its totient is φ = 55210480.

The previous prime is 55210457. The next prime is 55210483. The reversal of 55210481 is 18401255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50410000 + 4800481 = 7100^2 + 2191^2 .

It is a cyclic number.

It is not a de Polignac number, because 55210481 - 2⁶ = 55210417 is a prime.

It is a super-2 number, since 2×55210481² = 6096394424502722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 55210483, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55210481.

It is not a weakly prime, because it can be changed into another prime (55210483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27605240 + 27605241.

It is an arithmetic number, because the mean of its divisors is an integer number (27605241).

Almost surely, 2^55210481 is an apocalyptic number.

It is an amenable number.

55210481 is a deficient number, since it is larger than the sum of its proper divisors (1).

55210481 is an equidigital number, since it uses as much as digits as its factorization.

55210481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 55210481 is about 7430.3755625136. The cubic root of 55210481 is about 380.7797492975.

The spelling of 55210481 in words is "fifty-five million, two hundred ten thousand, four hundred eighty-one".