61971075 has 54 divisors (see below), whose sum is σ = 116259052. Its totient is φ = 32724000.

The previous prime is 61971071. The next prime is 61971079. The reversal of 61971075 is 57017916.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

61971075 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61971071) and next prime (61971079).

It is not a de Polignac number, because 61971075 - 2² = 61971071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61971071) 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 53 ways as a sum of consecutive naturals, for example, 613525 + ... + 613625.

Almost surely, 2^61971075 is an apocalyptic number.

61971075 is a deficient number, since it is larger than the sum of its proper divisors (54287977).

61971075 is an equidigital number, since it uses as much as digits as its factorization.

61971075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 36.

The square root of 61971075 is about 7872.1709204005. The cubic root of 61971075 is about 395.7276019236.

The spelling of 61971075 in words is "sixty-one million, nine hundred seventy-one thousand, seventy-five".