49211681 has 2 divisors, whose sum is σ = 49211682. Its totient is φ = 49211680.

The previous prime is 49211677. The next prime is 49211693. The reversal of 49211681 is 18611294.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47831056 + 1380625 = 6916^2 + 1175^2 .

It is a cyclic number.

It is not a de Polignac number, because 49211681 - 2² = 49211677 is a prime.

It is a super-2 number, since 2×49211681² = 4843579093691522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49211621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24605840 + 24605841.

It is an arithmetic number, because the mean of its divisors is an integer number (24605841).

Almost surely, 2^49211681 is an apocalyptic number.

It is an amenable number.

49211681 is a deficient number, since it is larger than the sum of its proper divisors (1).

49211681 is an equidigital number, since it uses as much as digits as its factorization.

49211681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 32.

The square root of 49211681 is about 7015.1037768518. The cubic root of 49211681 is about 366.4567565290.

The spelling of 49211681 in words is "forty-nine million, two hundred eleven thousand, six hundred eighty-one".