54811840 has 56 divisors (see below), whose sum is σ = 131472432. Its totient is φ = 21765120.

The previous prime is 54811819. The next prime is 54811871. The reversal of 54811840 is 4811845.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49695 + ... + 50785.

It is an arithmetic number, because the mean of its divisors is an integer number (2347722).

Almost surely, 2^54811840 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 54811840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65736216).

54811840 is an abundant number, since it is smaller than the sum of its proper divisors (76660592).

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

54811840 is a wasteful number, since it uses less digits than its factorization.

54811840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265 (or 1255 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 54811840 is about 7403.5018741134. The cubic root of 54811840 is about 379.8610757173.

The spelling of 54811840 in words is "fifty-four million, eight hundred eleven thousand, eight hundred forty".