61081003 has 2 divisors, whose sum is σ = 61081004. Its totient is φ = 61081002.

The previous prime is 61080979. The next prime is 61081037. The reversal of 61081003 is 30018016.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61081003 - 2²¹ = 58983851 is a prime.

It is not a weakly prime, because it can be changed into another prime (61081303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30540501 + 30540502.

It is an arithmetic number, because the mean of its divisors is an integer number (30540502).

Almost surely, 2^61081003 is an apocalyptic number.

61081003 is a deficient number, since it is larger than the sum of its proper divisors (1).

61081003 is an equidigital number, since it uses as much as digits as its factorization.

61081003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 61081003 is about 7815.4336412000. The cubic root of 61081003 is about 393.8238860926.

Adding to 61081003 its reverse (30018016), we get a palindrome (91099019).

The spelling of 61081003 in words is "sixty-one million, eighty-one thousand, three".