50161638 has 32 divisors (see below), whose sum is σ = 102806496. Its totient is φ = 16310528.

The previous prime is 50161637. The next prime is 50161649. The reversal of 50161638 is 83616105.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50161637) 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, 73756 + ... + 74432.

It is an arithmetic number, because the mean of its divisors is an integer number (3212703).

Almost surely, 2^50161638 is an apocalyptic number.

50161638 is an abundant number, since it is smaller than the sum of its proper divisors (52644858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50161638 is a wasteful number, since it uses less digits than its factorization.

50161638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 50161638 is about 7082.4881221221. The cubic root of 50161638 is about 368.7997091658.

The spelling of 50161638 in words is "fifty million, one hundred sixty-one thousand, six hundred thirty-eight".