50161565 has 8 divisors (see below), whose sum is σ = 62135808. Its totient is φ = 38834640.

The previous prime is 50161547. The next prime is 50161567. The reversal of 50161565 is 56516105.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50161565 - 2¹² = 50157469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50161567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161657 + ... + 161966.

It is an arithmetic number, because the mean of its divisors is an integer number (7766976).

Almost surely, 2^50161565 is an apocalyptic number.

It is an amenable number.

50161565 is a deficient number, since it is larger than the sum of its proper divisors (11974243).

50161565 is a wasteful number, since it uses less digits than its factorization.

50161565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323659.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 50161565 is about 7082.4829685641. The cubic root of 50161565 is about 368.7995302615.

The spelling of 50161565 in words is "fifty million, one hundred sixty-one thousand, five hundred sixty-five".