51408582 has 8 divisors (see below), whose sum is σ = 102817176. Its totient is φ = 17136192.

The previous prime is 51408563. The next prime is 51408583. The reversal of 51408582 is 28580415.

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

51408582 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51408583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4284043 + ... + 4284054.

It is an arithmetic number, because the mean of its divisors is an integer number (12852147).

Almost surely, 2^51408582 is an apocalyptic number.

51408582 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51408582 is a wasteful number, since it uses less digits than its factorization.

51408582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8568102.

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 51408582 is about 7169.9778242335. The cubic root of 51408582 is about 371.8306692631.

Adding to 51408582 its reverse (28580415), we get a palindrome (79988997).

The spelling of 51408582 in words is "fifty-one million, four hundred eight thousand, five hundred eighty-two".