50166561 has 16 divisors (see below), whose sum is σ = 68982464. Its totient is φ = 32405184.

The previous prime is 50166547. The next prime is 50166577. The reversal of 50166561 is 16566105.

It is not a de Polignac number, because 50166561 - 2¹³ = 50158369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50166521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30615 + ... + 32211.

It is an arithmetic number, because the mean of its divisors is an integer number (4311404).

Almost surely, 2^50166561 is an apocalyptic number.

It is an amenable number.

50166561 is a deficient number, since it is larger than the sum of its proper divisors (18815903).

50166561 is a wasteful number, since it uses less digits than its factorization.

50166561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 50166561 is about 7082.8356609482. The cubic root of 50166561 is about 368.8117737743.

The spelling of 50166561 in words is "fifty million, one hundred sixty-six thousand, five hundred sixty-one".