61547 has 2 divisors, whose sum is σ = 61548. Its totient is φ = 61546.

The previous prime is 61543. The next prime is 61553. The reversal of 61547 is 74516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61547 - 2² = 61543 is a prime.

It is a Chen prime.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 61547.

It is not a weakly prime, because it can be changed into another prime (61543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30773 + 30774.

It is an arithmetic number, because the mean of its divisors is an integer number (30774).

2⁶¹⁵⁴⁷ is an apocalyptic number.

61547 is a deficient number, since it is larger than the sum of its proper divisors (1).

61547 is an equidigital number, since it uses as much as digits as its factorization.

61547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 23.

The square root of 61547 is about 248.0866784009. The cubic root of 61547 is about 39.4822865618.

The spelling of 61547 in words is "sixty-one thousand, five hundred forty-seven".