51632745 has 8 divisors (see below), whose sum is σ = 82612416. Its totient is φ = 27537456.

The previous prime is 51632717. The next prime is 51632771. The reversal of 51632745 is 54723615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51632745 - 2¹¹ = 51630697 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1721077 + ... + 1721106.

It is an arithmetic number, because the mean of its divisors is an integer number (10326552).

Almost surely, 2^51632745 is an apocalyptic number.

It is an amenable number.

51632745 is a deficient number, since it is larger than the sum of its proper divisors (30979671).

51632745 is a wasteful number, since it uses less digits than its factorization.

51632745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3442191.

The product of its digits is 25200, while the sum is 33.

The square root of 51632745 is about 7185.5928774180. The cubic root of 51632745 is about 372.3703315770.

The spelling of 51632745 in words is "fifty-one million, six hundred thirty-two thousand, seven hundred forty-five".