61114721 has 2 divisors, whose sum is σ = 61114722. Its totient is φ = 61114720.

The previous prime is 61114693. The next prime is 61114727. The reversal of 61114721 is 12741116.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57214096 + 3900625 = 7564^2 + 1975^2 .

It is a cyclic number.

It is not a de Polignac number, because 61114721 - 2¹⁴ = 61098337 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61114727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30557360 + 30557361.

It is an arithmetic number, because the mean of its divisors is an integer number (30557361).

Almost surely, 2^61114721 is an apocalyptic number.

It is an amenable number.

61114721 is a deficient number, since it is larger than the sum of its proper divisors (1).

61114721 is an equidigital number, since it uses as much as digits as its factorization.

61114721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 23.

The square root of 61114721 is about 7817.5904855652. The cubic root of 61114721 is about 393.8963391220.

Adding to 61114721 its reverse (12741116), we get a palindrome (73855837).

The spelling of 61114721 in words is "sixty-one million, one hundred fourteen thousand, seven hundred twenty-one".