51503112 has 48 divisors (see below), whose sum is σ = 143264940. Its totient is φ = 16702848.

The previous prime is 51503099. The next prime is 51503119. The reversal of 51503112 is 21130515.

51503112 is a `hidden beast` number, since 51 + 503 + 112 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 39765636 + 11737476 = 6306^2 + 3426^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (51503119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7003 + ... + 12330.

Almost surely, 2^51503112 is an apocalyptic number.

It is an amenable number.

51503112 is an abundant number, since it is smaller than the sum of its proper divisors (91761828).

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

51503112 is a wasteful number, since it uses less digits than its factorization.

51503112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19382 (or 19375 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 51503112 is about 7176.5668672423. The cubic root of 51503112 is about 372.0584368829.

Adding to 51503112 its reverse (21130515), we get a palindrome (72633627).

It can be divided in two parts, 51503 and 112, that added together give a palindrome (51615).

The spelling of 51503112 in words is "fifty-one million, five hundred three thousand, one hundred twelve".