51494528 has 64 divisors (see below), whose sum is σ = 107442720. Its totient is φ = 24560640.

The previous prime is 51494507. The next prime is 51494533. The reversal of 51494528 is 82549415.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 51494491 and 51494500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393023 + ... + 393153.

Almost surely, 2^51494528 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 51494528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53721360).

51494528 is an abundant number, since it is smaller than the sum of its proper divisors (55948192).

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

51494528 is a wasteful number, since it uses less digits than its factorization.

51494528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 253 counting only the distinct ones).

The product of its digits is 57600, while the sum is 38.

The square root of 51494528 is about 7175.9687847705. The cubic root of 51494528 is about 372.0377654649.

The spelling of 51494528 in words is "fifty-one million, four hundred ninety-four thousand, five hundred twenty-eight".