51800052 has 24 divisors (see below), whose sum is σ = 121076032. Its totient is φ = 17236800.

The previous prime is 51800011. The next prime is 51800057. The reversal of 51800052 is 25000815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51800057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4152 + ... + 10992.

Almost surely, 2^51800052 is an apocalyptic number.

It is an amenable number.

51800052 is an abundant number, since it is smaller than the sum of its proper divisors (69275980).

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

51800052 is a wasteful number, since it uses less digits than its factorization.

51800052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7479 (or 7477 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 51800052 is about 7197.2252986828. The cubic root of 51800052 is about 372.7720985369.

Adding to 51800052 its reverse (25000815), we get a palindrome (76800867).

The spelling of 51800052 in words is "fifty-one million, eight hundred thousand, fifty-two".