54817812 has 108 divisors (see below), whose sum is σ = 168269920. Its totient is φ = 14699232.

The previous prime is 54817799. The next prime is 54817813. The reversal of 54817812 is 21871845.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54817813) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 512263 + ... + 512369.

Almost surely, 2^54817812 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 54817812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84134960).

54817812 is an abundant number, since it is smaller than the sum of its proper divisors (113452108).

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

54817812 is a wasteful number, since it uses less digits than its factorization.

54817812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 138 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 54817812 is about 7403.9051857787. The cubic root of 54817812 is about 379.8748710819.

The spelling of 54817812 in words is "fifty-four million, eight hundred seventeen thousand, eight hundred twelve".