61563343 has 2 divisors, whose sum is σ = 61563344. Its totient is φ = 61563342.

The previous prime is 61563331. The next prime is 61563353. The reversal of 61563343 is 34336516.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61563343 - 2²¹ = 59466191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61563353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30781671 + 30781672.

It is an arithmetic number, because the mean of its divisors is an integer number (30781672).

Almost surely, 2^61563343 is an apocalyptic number.

61563343 is a deficient number, since it is larger than the sum of its proper divisors (1).

61563343 is an equidigital number, since it uses as much as digits as its factorization.

61563343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 31.

The square root of 61563343 is about 7846.2311334806. The cubic root of 61563343 is about 394.8578092064.

Adding to 61563343 its reverse (34336516), we get a palindrome (95899859).

The spelling of 61563343 in words is "sixty-one million, five hundred sixty-three thousand, three hundred forty-three".