61541247 has 8 divisors (see below), whose sum is σ = 86373760. Its totient is φ = 38868120.

The previous prime is 61541201. The next prime is 61541257. The reversal of 61541247 is 74214516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61541247 - 2¹⁰ = 61540223 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61541257) 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 7 ways as a sum of consecutive naturals, for example, 539779 + ... + 539892.

It is an arithmetic number, because the mean of its divisors is an integer number (10796720).

Almost surely, 2^61541247 is an apocalyptic number.

61541247 is a deficient number, since it is larger than the sum of its proper divisors (24832513).

61541247 is a wasteful number, since it uses less digits than its factorization.

61541247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079693.

The product of its digits is 6720, while the sum is 30.

The square root of 61541247 is about 7844.8229425526. The cubic root of 61541247 is about 394.8105634388.

The spelling of 61541247 in words is "sixty-one million, five hundred forty-one thousand, two hundred forty-seven".