50545561 has 4 divisors (see below), whose sum is σ = 55140624. Its totient is φ = 45950500.

The previous prime is 50545553. The next prime is 50545591. The reversal of 50545561 is 16554505.

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.

It is a cyclic number.

It is not a de Polignac number, because 50545561 - 2³ = 50545553 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (50545501) 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, 2297515 + ... + 2297536.

It is an arithmetic number, because the mean of its divisors is an integer number (13785156).

Almost surely, 2^50545561 is an apocalyptic number.

It is an amenable number.

50545561 is a deficient number, since it is larger than the sum of its proper divisors (4595063).

50545561 is a wasteful number, since it uses less digits than its factorization.

50545561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4595062.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 50545561 is about 7109.5401398403. The cubic root of 50545561 is about 369.7382151161.

The spelling of 50545561 in words is "fifty million, five hundred forty-five thousand, five hundred sixty-one".