51016761 has 12 divisors (see below), whose sum is σ = 75259392. Its totient is φ = 33287256.

The previous prime is 51016759. The next prime is 51016781. The reversal of 51016761 is 16761015.

It is not a de Polignac number, because 51016761 - 2¹ = 51016759 is a prime.

It is a super-2 number, since 2×51016761² = 5205419805862242, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51016781) 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, 59881 + ... + 60726.

It is an arithmetic number, because the mean of its divisors is an integer number (6271616).

Almost surely, 2^51016761 is an apocalyptic number.

It is an amenable number.

51016761 is a deficient number, since it is larger than the sum of its proper divisors (24242631).

51016761 is a wasteful number, since it uses less digits than its factorization.

51016761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120660 (or 120657 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 51016761 is about 7142.6018368659. The cubic root of 51016761 is about 370.8835979615.

Adding to 51016761 its reverse (16761015), we get a palindrome (67777776).

It can be divided in two parts, 510 and 16761, that added together give a palindrome (17271).

The spelling of 51016761 in words is "fifty-one million, sixteen thousand, seven hundred sixty-one".