61044091 has 2 divisors, whose sum is σ = 61044092. Its totient is φ = 61044090.

The previous prime is 61044089. The next prime is 61044119. The reversal of 61044091 is 19044016.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61044091 - 2¹ = 61044089 is a prime.

Together with 61044089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (61044031) 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 as a sum of consecutive naturals, namely, 30522045 + 30522046.

It is an arithmetic number, because the mean of its divisors is an integer number (30522046).

Almost surely, 2^61044091 is an apocalyptic number.

61044091 is a deficient number, since it is larger than the sum of its proper divisors (1).

61044091 is an equidigital number, since it uses as much as digits as its factorization.

61044091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 61044091 is about 7813.0718030746. The cubic root of 61044091 is about 393.7445392373.

The spelling of 61044091 in words is "sixty-one million, forty-four thousand, ninety-one".