51364044 has 60 divisors (see below), whose sum is σ = 137173344. Its totient is φ = 16752096.

The previous prime is 51364039. The next prime is 51364051. The reversal of 51364044 is 44046315.

51364044 is a `hidden beast` number, since 5 + 13 + 640 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 51363999 and 51364017.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13542 + ... + 16914.

Almost surely, 2^51364044 is an apocalyptic number.

51364044 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 51364044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68586672).

51364044 is an abundant number, since it is smaller than the sum of its proper divisors (85809300).

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

51364044 is a wasteful number, since it uses less digits than its factorization.

51364044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3436 (or 3425 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 51364044 is about 7166.8712839007. The cubic root of 51364044 is about 371.7232593168.

It can be divided in two parts, 5136 and 4044, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 51364044 in words is "fifty-one million, three hundred sixty-four thousand, forty-four".