61000003 has 2 divisors, whose sum is σ = 61000004. Its totient is φ = 61000002.

The previous prime is 61000001. The next prime is 61000039. The reversal of 61000003 is 30000016.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61000003 - 2¹ = 61000001 is a prime.

Together with 61000001, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (61000001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30500001 + 30500002.

It is an arithmetic number, because the mean of its divisors is an integer number (30500002).

Almost surely, 2^61000003 is an apocalyptic number.

61000003 is a deficient number, since it is larger than the sum of its proper divisors (1).

61000003 is an equidigital number, since it uses as much as digits as its factorization.

61000003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 61000003 is about 7810.2498679620. The cubic root of 61000003 is about 393.6497247635.

Adding to 61000003 its reverse (30000016), we get a palindrome (91000019).

The spelling of 61000003 in words is "sixty-one million, three", and thus it is an aban number and an uban number.