51381104 has 10 divisors (see below), whose sum is σ = 99550920. Its totient is φ = 25690544.

The previous prime is 51381097. The next prime is 51381133. The reversal of 51381104 is 40118315.

It is a self number, because there is not a number n which added to its sum of digits gives 51381104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1605644 + ... + 1605675.

It is an arithmetic number, because the mean of its divisors is an integer number (9955092).

Almost surely, 2^51381104 is an apocalyptic number.

It is an amenable number.

51381104 is a deficient number, since it is larger than the sum of its proper divisors (48169816).

51381104 is a wasteful number, since it uses less digits than its factorization.

51381104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3211327 (or 3211321 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 51381104 is about 7168.0613836657. The cubic root of 51381104 is about 371.7644093532.

Adding to 51381104 its reverse (40118315), we get a palindrome (91499419).

The spelling of 51381104 in words is "fifty-one million, three hundred eighty-one thousand, one hundred four".