55473768 has 128 divisors (see below), whose sum is σ = 185472000. Its totient is φ = 15007680.

The previous prime is 55473763. The next prime is 55473773. The reversal of 55473768 is 86737455.

55473768 is a `hidden beast` number, since 554 + 7 + 37 + 68 = 666.

It is an interprime number because it is at equal distance from previous prime (55473763) and next prime (55473773).

It is a super-2 number, since 2×55473768² = 6154677872235648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55473763) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27763 + ... + 29693.

It is an arithmetic number, because the mean of its divisors is an integer number (1449000).

Almost surely, 2^55473768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55473768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92736000).

55473768 is an abundant number, since it is smaller than the sum of its proper divisors (129998232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55473768 is a wasteful number, since it uses less digits than its factorization.

55473768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972 (or 1962 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 55473768 is about 7448.0714282289. The cubic root of 55473768 is about 381.3840754631.

The spelling of 55473768 in words is "fifty-five million, four hundred seventy-three thousand, seven hundred sixty-eight".