50000278 has 4 divisors (see below), whose sum is σ = 75000420. Its totient is φ = 25000138.

The previous prime is 50000273. The next prime is 50000309. The reversal of 50000278 is 87200005.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50000273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12500068 + ... + 12500071.

It is an arithmetic number, because the mean of its divisors is an integer number (18750105).

Almost surely, 2^50000278 is an apocalyptic number.

50000278 is a deficient number, since it is larger than the sum of its proper divisors (25000142).

50000278 is a wasteful number, since it uses less digits than its factorization.

50000278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25000141.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 50000278 is about 7071.0874694067. The cubic root of 50000278 is about 368.4038326366.

The spelling of 50000278 in words is "fifty million, two hundred seventy-eight", and thus it is an aban number.