51220052 has 24 divisors (see below), whose sum is σ = 98779296. Its totient is φ = 23089248.

The previous prime is 51220033. The next prime is 51220063. The reversal of 51220052 is 25002215.

It is a self number, because there is not a number n which added to its sum of digits gives 51220052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9218 + ... + 13689.

It is an arithmetic number, because the mean of its divisors is an integer number (4115804).

Almost surely, 2^51220052 is an apocalyptic number.

51220052 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51220052 is a deficient number, since it is larger than the sum of its proper divisors (47559244).

51220052 is a wasteful number, since it uses less digits than its factorization.

51220052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22967 (or 22965 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 51220052 is about 7156.8185669332. The cubic root of 51220052 is about 371.3755759554.

Adding to 51220052 its reverse (25002215), we get a palindrome (76222267).

The spelling of 51220052 in words is "fifty-one million, two hundred twenty thousand, fifty-two".