51280252 has 24 divisors (see below), whose sum is σ = 92241072. Its totient is φ = 24931200.

The previous prime is 51280241. The next prime is 51280283. The reversal of 51280252 is 25208215.

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, 47802 + ... + 48862.

It is an arithmetic number, because the mean of its divisors is an integer number (3843378).

Almost surely, 2^51280252 is an apocalyptic number.

It is an amenable number.

51280252 is a deficient number, since it is larger than the sum of its proper divisors (40960820).

51280252 is a wasteful number, since it uses less digits than its factorization.

51280252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389 (or 1387 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 51280252 is about 7161.0231112600. The cubic root of 51280252 is about 371.5210141559.

Adding to 51280252 its reverse (25208215), we get a palindrome (76488467).

The spelling of 51280252 in words is "fifty-one million, two hundred eighty thousand, two hundred fifty-two".