51120663 has 16 divisors (see below), whose sum is σ = 75302400. Its totient is φ = 30588480.

The previous prime is 51120661. The next prime is 51120677. The reversal of 51120663 is 36602115.

It is not a de Polignac number, because 51120663 - 2¹ = 51120661 is a prime.

It is a super-2 number, since 2×51120663² = 5226644371119138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51120661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7198 + ... + 12411.

It is an arithmetic number, because the mean of its divisors is an integer number (4706400).

Almost surely, 2^51120663 is an apocalyptic number.

51120663 is a deficient number, since it is larger than the sum of its proper divisors (24181737).

51120663 is a wasteful number, since it uses less digits than its factorization.

51120663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19702.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 51120663 is about 7149.8715373075. The cubic root of 51120663 is about 371.1352108013.

Adding to 51120663 its reverse (36602115), we get a palindrome (87722778).

The spelling of 51120663 in words is "fifty-one million, one hundred twenty thousand, six hundred sixty-three".