61185851 has 2 divisors, whose sum is σ = 61185852. Its totient is φ = 61185850.

The previous prime is 61185841. The next prime is 61185863. The reversal of 61185851 is 15858116.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61185851 - 2¹⁴ = 61169467 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61185821) 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, 30592925 + 30592926.

It is an arithmetic number, because the mean of its divisors is an integer number (30592926).

Almost surely, 2^61185851 is an apocalyptic number.

61185851 is a deficient number, since it is larger than the sum of its proper divisors (1).

61185851 is an equidigital number, since it uses as much as digits as its factorization.

61185851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9600, while the sum is 35.

The square root of 61185851 is about 7822.1385183337. The cubic root of 61185851 is about 394.0490954650.

The spelling of 61185851 in words is "sixty-one million, one hundred eighty-five thousand, eight hundred fifty-one".