51632779 has 8 divisors (see below), whose sum is σ = 57250800. Its totient is φ = 46168800.

The previous prime is 51632771. The next prime is 51632783. The reversal of 51632779 is 97723615.

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

It is a cyclic number.

It is not a de Polignac number, because 51632779 - 2³ = 51632771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51632771) 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, 37804 + ... + 39145.

It is an arithmetic number, because the mean of its divisors is an integer number (7156350).

Almost surely, 2^51632779 is an apocalyptic number.

51632779 is a deficient number, since it is larger than the sum of its proper divisors (5618021).

51632779 is a wasteful number, since it uses less digits than its factorization.

51632779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77021.

The product of its digits is 79380, while the sum is 40.

The square root of 51632779 is about 7185.5952432627. The cubic root of 51632779 is about 372.3704133119.

The spelling of 51632779 in words is "fifty-one million, six hundred thirty-two thousand, seven hundred seventy-nine".