61432361 has 2 divisors, whose sum is σ = 61432362. Its totient is φ = 61432360.

The previous prime is 61432303. The next prime is 61432363. The reversal of 61432361 is 16323416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48219136 + 13213225 = 6944^2 + 3635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61432361 is a prime.

Together with 61432363, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 61432361.

It is not a weakly prime, because it can be changed into another prime (61432363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30716180 + 30716181.

It is an arithmetic number, because the mean of its divisors is an integer number (30716181).

Almost surely, 2^61432361 is an apocalyptic number.

It is an amenable number.

61432361 is a deficient number, since it is larger than the sum of its proper divisors (1).

61432361 is an equidigital number, since it uses as much as digits as its factorization.

61432361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 26.

The square root of 61432361 is about 7837.8798791510. The cubic root of 61432361 is about 394.5775775744.

Adding to 61432361 its reverse (16323416), we get a palindrome (77755777).

The spelling of 61432361 in words is "sixty-one million, four hundred thirty-two thousand, three hundred sixty-one".