51284450 has 24 divisors (see below), whose sum is σ = 109016832. Its totient is φ = 17583120.

The previous prime is 51284437. The next prime is 51284483. The reversal of 51284450 is 5448215.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72914 + ... + 73613.

It is an arithmetic number, because the mean of its divisors is an integer number (4542368).

Almost surely, 2^51284450 is an apocalyptic number.

51284450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51284450 is an abundant number, since it is smaller than the sum of its proper divisors (57732382).

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

51284450 is a wasteful number, since it uses less digits than its factorization.

51284450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146546 (or 146541 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 51284450 is about 7161.3162198021. The cubic root of 51284450 is about 371.5311519289.

The spelling of 51284450 in words is "fifty-one million, two hundred eighty-four thousand, four hundred fifty".