50449513 has 4 divisors (see below), whose sum is σ = 50675968. Its totient is φ = 50223060.

The previous prime is 50449507. The next prime is 50449517. The reversal of 50449513 is 31594405.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31594405 = 5 ⋅6318881.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50449513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50449517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112893 + ... + 113338.

It is an arithmetic number, because the mean of its divisors is an integer number (12668992).

Almost surely, 2^50449513 is an apocalyptic number.

It is an amenable number.

50449513 is a deficient number, since it is larger than the sum of its proper divisors (226455).

50449513 is a wasteful number, since it uses less digits than its factorization.

50449513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226454.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 50449513 is about 7102.7820605732. The cubic root of 50449513 is about 369.5038712017.

The spelling of 50449513 in words is "fifty million, four hundred forty-nine thousand, five hundred thirteen".