61216751 has 2 divisors, whose sum is σ = 61216752. Its totient is φ = 61216750.

The previous prime is 61216739. The next prime is 61216763. The reversal of 61216751 is 15761216.

It is a balanced prime because it is at equal distance from previous prime (61216739) and next prime (61216763).

It is a cyclic number.

It is not a de Polignac number, because 61216751 - 2¹⁰ = 61215727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61216451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30608375 + 30608376.

It is an arithmetic number, because the mean of its divisors is an integer number (30608376).

Almost surely, 2^61216751 is an apocalyptic number.

61216751 is a deficient number, since it is larger than the sum of its proper divisors (1).

61216751 is an equidigital number, since it uses as much as digits as its factorization.

61216751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 29.

The square root of 61216751 is about 7824.1134322043. The cubic root of 61216751 is about 394.1154183578.

Adding to 61216751 its reverse (15761216), we get a palindrome (76977967).

The spelling of 61216751 in words is "sixty-one million, two hundred sixteen thousand, seven hundred fifty-one".