49507681 has 2 divisors, whose sum is σ = 49507682. Its totient is φ = 49507680.

The previous prime is 49507649. The next prime is 49507687. The reversal of 49507681 is 18670594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25654225 + 23853456 = 5065^2 + 4884^2 .

It is a cyclic number.

It is not a de Polignac number, because 49507681 - 2⁵ = 49507649 is a prime.

It is a super-2 number, since 2×49507681² = 4902020955995522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49507687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24753840 + 24753841.

It is an arithmetic number, because the mean of its divisors is an integer number (24753841).

Almost surely, 2^49507681 is an apocalyptic number.

It is an amenable number.

49507681 is a deficient number, since it is larger than the sum of its proper divisors (1).

49507681 is an equidigital number, since it uses as much as digits as its factorization.

49507681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 49507681 is about 7036.1694834619. The cubic root of 49507681 is about 367.1900136397.

The spelling of 49507681 in words is "forty-nine million, five hundred seven thousand, six hundred eighty-one".