61543103 has 2 divisors, whose sum is σ = 61543104. Its totient is φ = 61543102.

The previous prime is 61543093. The next prime is 61543127. The reversal of 61543103 is 30134516.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61543103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61543403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30771551 + 30771552.

It is an arithmetic number, because the mean of its divisors is an integer number (30771552).

Almost surely, 2^61543103 is an apocalyptic number.

61543103 is a deficient number, since it is larger than the sum of its proper divisors (1).

61543103 is an equidigital number, since it uses as much as digits as its factorization.

61543103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 61543103 is about 7844.9412362363. The cubic root of 61543103 is about 394.8145323815.

Adding to 61543103 its reverse (30134516), we get a palindrome (91677619).

The spelling of 61543103 in words is "sixty-one million, five hundred forty-three thousand, one hundred three".