50161905 has 12 divisors (see below), whose sum is σ = 86947380. Its totient is φ = 26752992.

The previous prime is 50161861. The next prime is 50161931. The reversal of 50161905 is 50916105.

It can be written as a sum of positive squares in 2 ways, for example, as 28483569 + 21678336 = 5337^2 + 4656^2 .

It is not a de Polignac number, because 50161905 - 2⁶ = 50161841 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 557310 + ... + 557399.

It is an arithmetic number, because the mean of its divisors is an integer number (7245615).

Almost surely, 2^50161905 is an apocalyptic number.

It is an amenable number.

50161905 is a deficient number, since it is larger than the sum of its proper divisors (36785475).

50161905 is a wasteful number, since it uses less digits than its factorization.

50161905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114720 (or 1114717 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 50161905 is about 7082.5069714050. The cubic root of 50161905 is about 368.8003635127.

The spelling of 50161905 in words is "fifty million, one hundred sixty-one thousand, nine hundred five".