51102804 has 12 divisors (see below), whose sum is σ = 119239904. Its totient is φ = 17034264.

The previous prime is 51102767. The next prime is 51102817. The reversal of 51102804 is 40820115.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×51102804² = 5222993153324832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2129272 + ... + 2129295.

Almost surely, 2^51102804 is an apocalyptic number.

It is an amenable number.

51102804 is an abundant number, since it is smaller than the sum of its proper divisors (68137100).

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

51102804 is a wasteful number, since it uses less digits than its factorization.

51102804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4258574 (or 4258572 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 51102804 is about 7148.6225246547. The cubic root of 51102804 is about 371.0919870810.

Adding to 51102804 its reverse (40820115), we get a palindrome (91922919).

The spelling of 51102804 in words is "fifty-one million, one hundred two thousand, eight hundred four".