61214261 has 2 divisors, whose sum is σ = 61214262. Its totient is φ = 61214260.

The previous prime is 61214233. The next prime is 61214267. The reversal of 61214261 is 16241216.

61214261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43151761 + 18062500 = 6569^2 + 4250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61214261 is a prime.

It is a super-2 number, since 2×61214261² = 7494371499552242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61214267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30607130 + 30607131.

It is an arithmetic number, because the mean of its divisors is an integer number (30607131).

Almost surely, 2^61214261 is an apocalyptic number.

It is an amenable number.

61214261 is a deficient number, since it is larger than the sum of its proper divisors (1).

61214261 is an equidigital number, since it uses as much as digits as its factorization.

61214261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 23.

The square root of 61214261 is about 7823.9543071263. The cubic root of 61214261 is about 394.1100747186.

Adding to 61214261 its reverse (16241216), we get a palindrome (77455477).

The spelling of 61214261 in words is "sixty-one million, two hundred fourteen thousand, two hundred sixty-one".