61546487 has 2 divisors, whose sum is σ = 61546488. Its totient is φ = 61546486.

The previous prime is 61546447. The next prime is 61546489. The reversal of 61546487 is 78464516.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61546487 - 2⁶ = 61546423 is a prime.

Together with 61546489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61546489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30773243 + 30773244.

It is an arithmetic number, because the mean of its divisors is an integer number (30773244).

Almost surely, 2^61546487 is an apocalyptic number.

61546487 is a deficient number, since it is larger than the sum of its proper divisors (1).

61546487 is an equidigital number, since it uses as much as digits as its factorization.

61546487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 41.

The square root of 61546487 is about 7845.1569136634. The cubic root of 61546487 is about 394.8217686534.

The spelling of 61546487 in words is "sixty-one million, five hundred forty-six thousand, four hundred eighty-seven".