55938881 has 8 divisors (see below), whose sum is σ = 56630784. Its totient is φ = 55251360.

The previous prime is 55938871. The next prime is 55938889. The reversal of 55938881 is 18883955.

55938881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55938881 - 2¹⁴ = 55922497 is a prime.

It is a super-2 number, since 2×55938881² = 6258316815064322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55938889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29636 + ... + 31466.

It is an arithmetic number, because the mean of its divisors is an integer number (7078848).

Almost surely, 2^55938881 is an apocalyptic number.

It is an amenable number.

55938881 is a deficient number, since it is larger than the sum of its proper divisors (691903).

55938881 is a wasteful number, since it uses less digits than its factorization.

55938881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191.

The product of its digits is 345600, while the sum is 47.

The square root of 55938881 is about 7479.2299737339. The cubic root of 55938881 is about 382.4469996481.

The spelling of 55938881 in words is "fifty-five million, nine hundred thirty-eight thousand, eight hundred eighty-one".