49169881 has 2 divisors, whose sum is σ = 49169882. Its totient is φ = 49169880.

The previous prime is 49169863. The next prime is 49169903. The reversal of 49169881 is 18896194.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49070025 + 99856 = 7005^2 + 316^2 .

It is a cyclic number.

It is not a de Polignac number, because 49169881 - 2¹⁵ = 49137113 is a prime.

It is a super-2 number, since 2×49169881² = 4835354395108322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49169581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24584940 + 24584941.

It is an arithmetic number, because the mean of its divisors is an integer number (24584941).

Almost surely, 2^49169881 is an apocalyptic number.

It is an amenable number.

49169881 is a deficient number, since it is larger than the sum of its proper divisors (1).

49169881 is an equidigital number, since it uses as much as digits as its factorization.

49169881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 46.

The square root of 49169881 is about 7012.1238580048. The cubic root of 49169881 is about 366.3529720133.

The spelling of 49169881 in words is "forty-nine million, one hundred sixty-nine thousand, eight hundred eighty-one".