55921411 has 16 divisors (see below), whose sum is σ = 69366528. Its totient is φ = 43898400.

The previous prime is 55921403. The next prime is 55921421. The reversal of 55921411 is 11412955.

It is not a de Polignac number, because 55921411 - 2³ = 55921403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55921411.

It is not an unprimeable number, because it can be changed into a prime (55921421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9576 + ... + 14266.

It is an arithmetic number, because the mean of its divisors is an integer number (4335408).

Almost surely, 2^55921411 is an apocalyptic number.

55921411 is a deficient number, since it is larger than the sum of its proper divisors (13445117).

55921411 is a wasteful number, since it uses less digits than its factorization.

55921411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4842.

The product of its digits is 1800, while the sum is 28.

The square root of 55921411 is about 7478.0619815565. The cubic root of 55921411 is about 382.4071821149.

It can be divided in two parts, 55 and 921411, that multiplied together give a palindrome (50677605).

The spelling of 55921411 in words is "fifty-five million, nine hundred twenty-one thousand, four hundred eleven".