51234761 has 2 divisors, whose sum is σ = 51234762. Its totient is φ = 51234760.

The previous prime is 51234713. The next prime is 51234769. The reversal of 51234761 is 16743215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51036736 + 198025 = 7144^2 + 445^2 .

It is a cyclic number.

It is not a de Polignac number, because 51234761 - 2¹⁰ = 51233737 is a prime.

It is a super-3 number, since 3×51234761³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51234769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25617380 + 25617381.

It is an arithmetic number, because the mean of its divisors is an integer number (25617381).

Almost surely, 2^51234761 is an apocalyptic number.

It is an amenable number.

51234761 is a deficient number, since it is larger than the sum of its proper divisors (1).

51234761 is an equidigital number, since it uses as much as digits as its factorization.

51234761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 29.

The square root of 51234761 is about 7157.8461145794. The cubic root of 51234761 is about 371.4111221938.

Adding to 51234761 its reverse (16743215), we get a palindrome (67977976).

The spelling of 51234761 in words is "fifty-one million, two hundred thirty-four thousand, seven hundred sixty-one".