55327040 has 56 divisors (see below), whose sum is σ = 134992872. Its totient is φ = 21585920.

The previous prime is 55327001. The next prime is 55327043. The reversal of 55327040 is 4072355.

It can be written as a sum of positive squares in 4 ways, for example, as 3717184 + 51609856 = 1928^2 + 7184^2 .

It is a super-2 number, since 2×55327040² = 6122162710323200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55327043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11012 + ... + 15228.

It is an arithmetic number, because the mean of its divisors is an integer number (2410587).

Almost surely, 2^55327040 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 55327040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67496436).

55327040 is an abundant number, since it is smaller than the sum of its proper divisors (79665832).

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

55327040 is a wasteful number, since it uses less digits than its factorization.

55327040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275 (or 4265 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 55327040 is about 7438.2148395969. The cubic root of 55327040 is about 381.0475252037.

Adding to 55327040 its reverse (4072355), we get a palindrome (59399395).

The spelling of 55327040 in words is "fifty-five million, three hundred twenty-seven thousand, forty".