50671681 has 2 divisors, whose sum is σ = 50671682. Its totient is φ = 50671680.

The previous prime is 50671667. The next prime is 50671693. The reversal of 50671681 is 18617605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50637456 + 34225 = 7116^2 + 185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50671681 is a prime.

It is a super-2 number, since 2×50671681² = 5135238510731522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50671661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25335840 + 25335841.

It is an arithmetic number, because the mean of its divisors is an integer number (25335841).

Almost surely, 2^50671681 is an apocalyptic number.

It is an amenable number.

50671681 is a deficient number, since it is larger than the sum of its proper divisors (1).

50671681 is an equidigital number, since it uses as much as digits as its factorization.

50671681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 50671681 is about 7118.4043858157. The cubic root of 50671681 is about 370.0454801654.

The spelling of 50671681 in words is "fifty million, six hundred seventy-one thousand, six hundred eighty-one".