51516272 has 10 divisors (see below), whose sum is σ = 99812808. Its totient is φ = 25758128.

The previous prime is 51516271. The next prime is 51516281. The reversal of 51516272 is 27261515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51516271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1609868 + ... + 1609899.

Almost surely, 2^51516272 is an apocalyptic number.

It is an amenable number.

51516272 is a deficient number, since it is larger than the sum of its proper divisors (48296536).

51516272 is a wasteful number, since it uses less digits than its factorization.

51516272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3219775 (or 3219769 counting only the distinct ones).

The product of its digits is 4200, while the sum is 29.

The square root of 51516272 is about 7177.4836816255. The cubic root of 51516272 is about 372.0901234604.

Adding to 51516272 its reverse (27261515), we get a palindrome (78777787).

The spelling of 51516272 in words is "fifty-one million, five hundred sixteen thousand, two hundred seventy-two".