51801082 has 8 divisors (see below), whose sum is σ = 78471252. Its totient is φ = 25644000.

The previous prime is 51801059. The next prime is 51801107. The reversal of 51801082 is 28010815.

It can be written as a sum of positive squares in 2 ways, for example, as 51710481 + 90601 = 7191^2 + 301^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128019 + ... + 128422.

Almost surely, 2^51801082 is an apocalyptic number.

51801082 is a deficient number, since it is larger than the sum of its proper divisors (26670170).

51801082 is a wasteful number, since it uses less digits than its factorization.

51801082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256544.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 51801082 is about 7197.2968536806. The cubic root of 51801082 is about 372.7745692726.

Adding to 51801082 its reverse (28010815), we get a palindrome (79811897).

The spelling of 51801082 in words is "fifty-one million, eight hundred one thousand, eighty-two".