61081883 has 2 divisors, whose sum is σ = 61081884. Its totient is φ = 61081882.

The previous prime is 61081879. The next prime is 61081897. The reversal of 61081883 is 38818016.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61081883 - 2² = 61081879 is a prime.

It is a super-3 number, since 3×61081883³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61081483) 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, 30540941 + 30540942.

It is an arithmetic number, because the mean of its divisors is an integer number (30540942).

Almost surely, 2^61081883 is an apocalyptic number.

61081883 is a deficient number, since it is larger than the sum of its proper divisors (1).

61081883 is an equidigital number, since it uses as much as digits as its factorization.

61081883 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 61081883 is about 7815.4899398566. The cubic root of 61081883 is about 393.8257773700.

Adding to 61081883 its reverse (38818016), we get a palindrome (99899899).

The spelling of 61081883 in words is "sixty-one million, eighty-one thousand, eight hundred eighty-three".