55263384 has 80 divisors (see below), whose sum is σ = 168882120. Its totient is φ = 16744320.

The previous prime is 55263361. The next prime is 55263431. The reversal of 55263384 is 48336255.

It is a happy number.

It is a super-2 number, since 2×55263384² = 6108083222262912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3252 + ... + 11004.

Almost surely, 2^55263384 is an apocalyptic number.

55263384 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55263384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84441060).

55263384 is an abundant number, since it is smaller than the sum of its proper divisors (113618736).

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

55263384 is a wasteful number, since it uses less digits than its factorization.

55263384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7782 (or 7769 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 55263384 is about 7433.9346244099. The cubic root of 55263384 is about 380.9013322529.

It can be divided in two parts, 552 and 63384, that added together give a palindrome (63936).

The spelling of 55263384 in words is "fifty-five million, two hundred sixty-three thousand, three hundred eighty-four".