50147749 has 4 divisors (see below), whose sum is σ = 50166540. Its totient is φ = 50128960.

The previous prime is 50147743. The next prime is 50147753. The reversal of 50147749 is 94774105.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29052100 + 21095649 = 5390^2 + 4593^2 .

It is a cyclic number.

It is not a de Polignac number, because 50147749 - 2⁷ = 50147621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50147743) 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, 4564 + ... + 11005.

It is an arithmetic number, because the mean of its divisors is an integer number (12541635).

Almost surely, 2^50147749 is an apocalyptic number.

It is an amenable number.

50147749 is a deficient number, since it is larger than the sum of its proper divisors (18791).

50147749 is a wasteful number, since it uses less digits than its factorization.

50147749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18790.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 50147749 is about 7081.5075372409. The cubic root of 50147749 is about 368.7656676671.

The spelling of 50147749 in words is "fifty million, one hundred forty-seven thousand, seven hundred forty-nine".