50521505 has 4 divisors (see below), whose sum is σ = 60625812. Its totient is φ = 40417200.

The previous prime is 50521487. The next prime is 50521529. The reversal of 50521505 is 50512505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50512505 = 5 ⋅10102501.

It can be written as a sum of positive squares in 2 ways, for example, as 14569489 + 35952016 = 3817^2 + 5996^2 .

It is not a de Polignac number, because 50521505 - 2⁸ = 50521249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 5052146 + ... + 5052155.

It is an arithmetic number, because the mean of its divisors is an integer number (15156453).

Almost surely, 2^50521505 is an apocalyptic number.

It is an amenable number.

50521505 is a deficient number, since it is larger than the sum of its proper divisors (10104307).

50521505 is a wasteful number, since it uses less digits than its factorization.

50521505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10104306.

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 50521505 is about 7107.8481272464. The cubic root of 50521505 is about 369.6795496683.

The spelling of 50521505 in words is "fifty million, five hundred twenty-one thousand, five hundred five".