55959281 has 16 divisors (see below), whose sum is σ = 67094016. Its totient is φ = 45665856.

The previous prime is 55959259. The next prime is 55959283. The reversal of 55959281 is 18295955.

It is a cyclic number.

It is not a de Polignac number, because 55959281 - 2¹⁸ = 55697137 is a prime.

It is a super-2 number, since 2×55959281² = 6262882260073922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55959283) 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, 9875 + ... + 14471.

It is an arithmetic number, because the mean of its divisors is an integer number (4193376).

Almost surely, 2^55959281 is an apocalyptic number.

It is an amenable number.

55959281 is a deficient number, since it is larger than the sum of its proper divisors (11134735).

55959281 is a wasteful number, since it uses less digits than its factorization.

55959281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4688.

The product of its digits is 162000, while the sum is 44.

The square root of 55959281 is about 7480.5936261770. The cubic root of 55959281 is about 382.4934847310.

The spelling of 55959281 in words is "fifty-five million, nine hundred fifty-nine thousand, two hundred eighty-one".