55823040 has 448 divisors, whose sum is σ = 245790720. Its totient is φ = 11612160.

The previous prime is 55823021. The next prime is 55823041. The reversal of 55823040 is 4032855.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 55822995 and 55823013.

It is not an unprimeable number, because it can be changed into a prime (55823041) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 786205 + ... + 786275.

It is an arithmetic number, because the mean of its divisors is an integer number (548640).

Almost surely, 2^55823040 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 55823040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122895360).

55823040 is an abundant number, since it is smaller than the sum of its proper divisors (189967680).

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

55823040 is a wasteful number, since it uses less digits than its factorization.

55823040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 55823040 is about 7471.4817807447. The cubic root of 55823040 is about 382.1828204882.

Adding to 55823040 its reverse (4032855), we get a palindrome (59855895).

The spelling of 55823040 in words is "fifty-five million, eight hundred twenty-three thousand, forty".