51801002 has 8 divisors (see below), whose sum is σ = 84765312. Its totient is φ = 23545900.

The previous prime is 51800993. The next prime is 51801059. The reversal of 51801002 is 20010815.

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, 1177274 + ... + 1177317.

It is an arithmetic number, because the mean of its divisors is an integer number (10595664).

Almost surely, 2^51801002 is an apocalyptic number.

51801002 is a deficient number, since it is larger than the sum of its proper divisors (32964310).

51801002 is a wasteful number, since it uses less digits than its factorization.

51801002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2354604.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 51801002 is about 7197.2912960363. The cubic root of 51801002 is about 372.7743773720.

Adding to 51801002 its reverse (20010815), we get a palindrome (71811817).

The spelling of 51801002 in words is "fifty-one million, eight hundred one thousand, two".