7561849 has 2 divisors, whose sum is σ = 7561850. Its totient is φ = 7561848.

The previous prime is 7561843. The next prime is 7561901. The reversal of 7561849 is 9481657.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5143824 + 2418025 = 2268^2 + 1555^2 .

It is a cyclic number.

It is not a de Polignac number, because 7561849 - 2¹⁷ = 7430777 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (7561843) 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, 3780924 + 3780925.

It is an arithmetic number, because the mean of its divisors is an integer number (3780925).

Almost surely, 2^7561849 is an apocalyptic number.

It is an amenable number.

7561849 is a deficient number, since it is larger than the sum of its proper divisors (1).

7561849 is an equidigital number, since it uses as much as digits as its factorization.

7561849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 7561849 is about 2749.8816338163. The cubic root of 7561849 is about 196.2799778404.

The spelling of 7561849 in words is "seven million, five hundred sixty-one thousand, eight hundred forty-nine".