51893244 has 96 divisors (see below), whose sum is σ = 151280640. Its totient is φ = 15263424.

The previous prime is 51893239. The next prime is 51893251. The reversal of 51893244 is 44239815.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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 = 51893199 and 51893208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31489 + ... + 33095.

It is an arithmetic number, because the mean of its divisors is an integer number (1575840).

Almost surely, 2^51893244 is an apocalyptic number.

51893244 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51893244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75640320).

51893244 is an abundant number, since it is smaller than the sum of its proper divisors (99387396).

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

51893244 is a wasteful number, since it uses less digits than its factorization.

51893244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656 (or 1648 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 51893244 is about 7203.6965510771. The cubic root of 51893244 is about 372.9955125039.

The spelling of 51893244 in words is "fifty-one million, eight hundred ninety-three thousand, two hundred forty-four".