49591081 has 2 divisors, whose sum is σ = 49591082. Its totient is φ = 49591080.

The previous prime is 49591051. The next prime is 49591097. The reversal of 49591081 is 18019594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49491225 + 99856 = 7035^2 + 316^2 .

It is a cyclic number.

It is not a de Polignac number, because 49591081 - 2⁷ = 49590953 is a prime.

It is a super-2 number, since 2×49591081² = 4918550629497122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 49591081.

It is not a weakly prime, because it can be changed into another prime (49591001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24795540 + 24795541.

It is an arithmetic number, because the mean of its divisors is an integer number (24795541).

Almost surely, 2^49591081 is an apocalyptic number.

It is an amenable number.

49591081 is a deficient number, since it is larger than the sum of its proper divisors (1).

49591081 is an equidigital number, since it uses as much as digits as its factorization.

49591081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 49591081 is about 7042.0935097455. The cubic root of 49591081 is about 367.3960858189.

The spelling of 49591081 in words is "forty-nine million, five hundred ninety-one thousand, eighty-one".