50509642 has 4 divisors (see below), whose sum is σ = 75764466. Its totient is φ = 25254820.

The previous prime is 50509639. The next prime is 50509687. The reversal of 50509642 is 24690505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 44502241 + 6007401 = 6671^2 + 2451^2 .

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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12627409 + ... + 12627412.

Almost surely, 2^50509642 is an apocalyptic number.

50509642 is a deficient number, since it is larger than the sum of its proper divisors (25254824).

50509642 is a wasteful number, since it uses less digits than its factorization.

50509642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25254823.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 50509642 is about 7107.0135781494. The cubic root of 50509642 is about 369.6506124741.

The spelling of 50509642 in words is "fifty million, five hundred nine thousand, six hundred forty-two".