50647681 has 4 divisors (see below), whose sum is σ = 57883072. Its totient is φ = 43412292.

The previous prime is 50647657. The next prime is 50647691. The reversal of 50647681 is 18674605.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 50647681 - 2⁹ = 50647169 is a prime.

It is a super-2 number, since 2×50647681² = 5130375181355522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50647681.

It is not an unprimeable number, because it can be changed into a prime (50647621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3617685 + ... + 3617698.

It is an arithmetic number, because the mean of its divisors is an integer number (14470768).

Almost surely, 2^50647681 is an apocalyptic number.

It is an amenable number.

50647681 is a deficient number, since it is larger than the sum of its proper divisors (7235391).

50647681 is an equidigital number, since it uses as much as digits as its factorization.

50647681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7235390.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 50647681 is about 7116.7184151124. The cubic root of 50647681 is about 369.9870484875.

The spelling of 50647681 in words is "fifty million, six hundred forty-seven thousand, six hundred eighty-one".