61542983 has 2 divisors, whose sum is σ = 61542984. Its totient is φ = 61542982.

The previous prime is 61542977. The next prime is 61542991. The reversal of 61542983 is 38924516.

It is a happy number.

61542983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61542983 - 2¹² = 61538887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61542913) 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 as a sum of consecutive naturals, namely, 30771491 + 30771492.

It is an arithmetic number, because the mean of its divisors is an integer number (30771492).

Almost surely, 2^61542983 is an apocalyptic number.

61542983 is a deficient number, since it is larger than the sum of its proper divisors (1).

61542983 is an equidigital number, since it uses as much as digits as its factorization.

61542983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 61542983 is about 7844.9335879917. The cubic root of 61542983 is about 394.8142757712.

The spelling of 61542983 in words is "sixty-one million, five hundred forty-two thousand, nine hundred eighty-three".