61030071 has 16 divisors (see below), whose sum is σ = 95174400. Its totient is φ = 38544984.

The previous prime is 61030069. The next prime is 61030087. The reversal of 61030071 is 17003016.

It is not a de Polignac number, because 61030071 - 2¹ = 61030069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61030001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58971 + ... + 59996.

It is an arithmetic number, because the mean of its divisors is an integer number (5948400).

Almost surely, 2^61030071 is an apocalyptic number.

61030071 is a deficient number, since it is larger than the sum of its proper divisors (34144329).

61030071 is a wasteful number, since it uses less digits than its factorization.

61030071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118995 (or 118989 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 61030071 is about 7812.1745372207. The cubic root of 61030071 is about 393.7143931520.

Adding to 61030071 its reverse (17003016), we get a palindrome (78033087).

The spelling of 61030071 in words is "sixty-one million, thirty thousand, seventy-one".