51247782 has 16 divisors (see below), whose sum is σ = 113884080. Its totient is φ = 17082576.

The previous prime is 51247759. The next prime is 51247789. The reversal of 51247782 is 28774215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51247789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474463 + ... + 474570.

It is an arithmetic number, because the mean of its divisors is an integer number (7117755).

Almost surely, 2^51247782 is an apocalyptic number.

51247782 is an abundant number, since it is smaller than the sum of its proper divisors (62636298).

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

51247782 is a wasteful number, since it uses less digits than its factorization.

51247782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949044 (or 949038 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 51247782 is about 7158.7556181225. The cubic root of 51247782 is about 371.4425834810.

The spelling of 51247782 in words is "fifty-one million, two hundred forty-seven thousand, seven hundred eighty-two".