51818676 has 72 divisors (see below), whose sum is σ = 151492320. Its totient is φ = 13664448.

The previous prime is 51818659. The next prime is 51818677. The reversal of 51818676 is 67681815.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51818677) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4255 + ... + 11033.

It is an arithmetic number, because the mean of its divisors is an integer number (2104060).

Almost surely, 2^51818676 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 51818676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75746160).

51818676 is an abundant number, since it is smaller than the sum of its proper divisors (99673644).

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

51818676 is a wasteful number, since it uses less digits than its factorization.

51818676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6813 (or 6804 counting only the distinct ones).

The product of its digits is 80640, while the sum is 42.

The square root of 51818676 is about 7198.5190143529. The cubic root of 51818676 is about 372.8167682198.

The spelling of 51818676 in words is "fifty-one million, eight hundred eighteen thousand, six hundred seventy-six".