50215565 has 4 divisors (see below), whose sum is σ = 60258684. Its totient is φ = 40172448.

The previous prime is 50215553. The next prime is 50215577. The reversal of 50215565 is 56551205.

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

It is an interprime number because it is at equal distance from previous prime (50215553) and next prime (50215577).

It can be written as a sum of positive squares in 2 ways, for example, as 39100009 + 11115556 = 6253^2 + 3334^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50215565 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5021552 + ... + 5021561.

It is an arithmetic number, because the mean of its divisors is an integer number (15064671).

Almost surely, 2^50215565 is an apocalyptic number.

It is an amenable number.

50215565 is a deficient number, since it is larger than the sum of its proper divisors (10043119).

50215565 is a wasteful number, since it uses less digits than its factorization.

50215565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10043118.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 50215565 is about 7086.2941655000. The cubic root of 50215565 is about 368.9318230009.

The spelling of 50215565 in words is "fifty million, two hundred fifteen thousand, five hundred sixty-five".