61003971 has 36 divisors (see below), whose sum is σ = 104919672. Its totient is φ = 34038144.

The previous prime is 61003967. The next prime is 61003991. The reversal of 61003971 is 17930016.

61003971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61003971 - 2² = 61003967 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61003951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17355 + ... + 20571.

Almost surely, 2^61003971 is an apocalyptic number.

61003971 is a deficient number, since it is larger than the sum of its proper divisors (43915701).

61003971 is a wasteful number, since it uses less digits than its factorization.

61003971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3280 (or 3270 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 61003971 is about 7810.5038889946. The cubic root of 61003971 is about 393.6582601086.

Adding to 61003971 its reverse (17930016), we get a palindrome (78933987).

The spelling of 61003971 in words is "sixty-one million, three thousand, nine hundred seventy-one".