61295321 has 2 divisors, whose sum is σ = 61295322. Its totient is φ = 61295320.

The previous prime is 61295317. The next prime is 61295323. The reversal of 61295321 is 12359216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53655625 + 7639696 = 7325^2 + 2764^2 .

It is a cyclic number.

It is not a de Polignac number, because 61295321 - 2² = 61295317 is a prime.

Together with 61295323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61295323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30647660 + 30647661.

It is an arithmetic number, because the mean of its divisors is an integer number (30647661).

Almost surely, 2^61295321 is an apocalyptic number.

It is an amenable number.

61295321 is a deficient number, since it is larger than the sum of its proper divisors (1).

61295321 is an equidigital number, since it uses as much as digits as its factorization.

61295321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 29.

The square root of 61295321 is about 7829.1328383161. The cubic root of 61295321 is about 394.2839583380.

It can be divided in two parts, 61295 and 321, that added together give a palindrome (61616).

The spelling of 61295321 in words is "sixty-one million, two hundred ninety-five thousand, three hundred twenty-one".