51194844 has 72 divisors (see below), whose sum is σ = 134184960. Its totient is φ = 16447392.

The previous prime is 51194839. The next prime is 51194861. The reversal of 51194844 is 44849115.

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

It is a junction number, because it is equal to n+sod(n) for n = 51194799 and 51194808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133477 + ... + 133859.

It is an arithmetic number, because the mean of its divisors is an integer number (1863680).

Almost surely, 2^51194844 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 51194844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67092480).

51194844 is an abundant number, since it is smaller than the sum of its proper divisors (82990116).

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

51194844 is a wasteful number, since it uses less digits than its factorization.

51194844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519 (or 514 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 51194844 is about 7155.0572324755. The cubic root of 51194844 is about 371.3146416706.

The spelling of 51194844 in words is "fifty-one million, one hundred ninety-four thousand, eight hundred forty-four".