51632782 has 4 divisors (see below), whose sum is σ = 77449176. Its totient is φ = 25816390.

The previous prime is 51632771. The next prime is 51632783. The reversal of 51632782 is 28723615.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51632783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12908194 + ... + 12908197.

It is an arithmetic number, because the mean of its divisors is an integer number (19362294).

Almost surely, 2^51632782 is an apocalyptic number.

51632782 is a deficient number, since it is larger than the sum of its proper divisors (25816394).

51632782 is a wasteful number, since it uses less digits than its factorization.

51632782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25816393.

The product of its digits is 20160, while the sum is 34.

The square root of 51632782 is about 7185.5954520137. The cubic root of 51632782 is about 372.3704205238.

The spelling of 51632782 in words is "fifty-one million, six hundred thirty-two thousand, seven hundred eighty-two".