55384131 has 16 divisors (see below), whose sum is σ = 80737920. Its totient is φ = 33491520.

The previous prime is 55384127. The next prime is 55384169. The reversal of 55384131 is 13148355.

It is not a de Polignac number, because 55384131 - 2² = 55384127 is a prime.

It is a super-2 number, since 2×55384131² = 6134803933250322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55384111) 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, 15655 + ... + 18863.

It is an arithmetic number, because the mean of its divisors is an integer number (5046120).

Almost surely, 2^55384131 is an apocalyptic number.

55384131 is a deficient number, since it is larger than the sum of its proper divisors (25353789).

55384131 is a wasteful number, since it uses less digits than its factorization.

55384131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3746.

The product of its digits is 7200, while the sum is 30.

The square root of 55384131 is about 7442.0515316679. The cubic root of 55384131 is about 381.1785455624.

It can be divided in two parts, 5538 and 4131, that added together give a palindrome (9669).

The spelling of 55384131 in words is "fifty-five million, three hundred eighty-four thousand, one hundred thirty-one".