51463520 has 24 divisors (see below), whose sum is σ = 121582944. Its totient is φ = 20585344.

The previous prime is 51463519. The next prime is 51463537. The reversal of 51463520 is 2536415.

It is a self number, because there is not a number n which added to its sum of digits gives 51463520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160664 + ... + 160983.

It is an arithmetic number, because the mean of its divisors is an integer number (5065956).

Almost surely, 2^51463520 is an apocalyptic number.

It is an amenable number.

51463520 is an abundant number, since it is smaller than the sum of its proper divisors (70119424).

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

51463520 is a wasteful number, since it uses less digits than its factorization.

51463520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321662 (or 321654 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 51463520 is about 7173.8079149082. The cubic root of 51463520 is about 371.9630749182.

Adding to 51463520 its reverse (2536415), we get a palindrome (53999935).

The spelling of 51463520 in words is "fifty-one million, four hundred sixty-three thousand, five hundred twenty".