55481764 has 24 divisors (see below), whose sum is σ = 104961528. Its totient is φ = 25509120.

The previous prime is 55481737. The next prime is 55481791. The reversal of 55481764 is 46718455.

55481764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55481737) and next prime (55481791).

It can be written as a sum of positive squares in 4 ways, for example, as 128164 + 55353600 = 358^2 + 7440^2 .

It is a super-2 number, since 2×55481764² = 6156452273103392, which contains 22 as substring.

It is an unprimeable number.

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, 12714 + ... + 16510.

It is an arithmetic number, because the mean of its divisors is an integer number (4373397).

Almost surely, 2^55481764 is an apocalyptic number.

It is an amenable number.

55481764 is a deficient number, since it is larger than the sum of its proper divisors (49479764).

55481764 is a wasteful number, since it uses less digits than its factorization.

55481764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4095 (or 4093 counting only the distinct ones).

The product of its digits is 134400, while the sum is 40.

The square root of 55481764 is about 7448.6081921390. The cubic root of 55481764 is about 381.4023988417.

The spelling of 55481764 in words is "fifty-five million, four hundred eighty-one thousand, seven hundred sixty-four".