55120413 has 16 divisors (see below), whose sum is σ = 74547200. Its totient is φ = 36224496.

The previous prime is 55120399. The next prime is 55120423. The reversal of 55120413 is 31402155.

It is not a de Polignac number, because 55120413 - 2⁵ = 55120381 is a prime.

It is a Duffinian number.

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 55120413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55120423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75456 + ... + 76182.

It is an arithmetic number, because the mean of its divisors is an integer number (4659200).

Almost surely, 2^55120413 is an apocalyptic number.

It is an amenable number.

55120413 is a deficient number, since it is larger than the sum of its proper divisors (19426787).

55120413 is a wasteful number, since it uses less digits than its factorization.

55120413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 55120413 is about 7424.3122913843. The cubic root of 55120413 is about 380.5725740386.

Adding to 55120413 its reverse (31402155), we get a palindrome (86522568).

The spelling of 55120413 in words is "fifty-five million, one hundred twenty thousand, four hundred thirteen".