61335251 has 2 divisors, whose sum is σ = 61335252. Its totient is φ = 61335250.

The previous prime is 61335199. The next prime is 61335271. The reversal of 61335251 is 15253316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61335251 - 2⁶ = 61335187 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61335251.

It is not a weakly prime, because it can be changed into another prime (61335271) 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, 30667625 + 30667626.

It is an arithmetic number, because the mean of its divisors is an integer number (30667626).

Almost surely, 2^61335251 is an apocalyptic number.

61335251 is a deficient number, since it is larger than the sum of its proper divisors (1).

61335251 is an equidigital number, since it uses as much as digits as its factorization.

61335251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 26.

The square root of 61335251 is about 7831.6825139940. The cubic root of 61335251 is about 394.3695567206.

Adding to 61335251 its reverse (15253316), we get a palindrome (76588567).

The spelling of 61335251 in words is "sixty-one million, three hundred thirty-five thousand, two hundred fifty-one".