61150249 has 2 divisors, whose sum is σ = 61150250. Its totient is φ = 61150248.

The previous prime is 61150247. The next prime is 61150339. The reversal of 61150249 is 94205116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60840000 + 310249 = 7800^2 + 557^2 .

It is a cyclic number.

It is not a de Polignac number, because 61150249 - 2¹ = 61150247 is a prime.

Together with 61150247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (61150247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30575124 + 30575125.

It is an arithmetic number, because the mean of its divisors is an integer number (30575125).

Almost surely, 2^61150249 is an apocalyptic number.

It is an amenable number.

61150249 is a deficient number, since it is larger than the sum of its proper divisors (1).

61150249 is an equidigital number, since it uses as much as digits as its factorization.

61150249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 61150249 is about 7819.8624668213. The cubic root of 61150249 is about 393.9726526408.

The spelling of 61150249 in words is "sixty-one million, one hundred fifty thousand, two hundred forty-nine".