50540278 has 4 divisors (see below), whose sum is σ = 75810420. Its totient is φ = 25270138.

The previous prime is 50540251. The next prime is 50540279. The reversal of 50540278 is 87204505.

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

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50540279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12635068 + ... + 12635071.

It is an arithmetic number, because the mean of its divisors is an integer number (18952605).

Almost surely, 2^50540278 is an apocalyptic number.

50540278 is a deficient number, since it is larger than the sum of its proper divisors (25270142).

50540278 is a wasteful number, since it uses less digits than its factorization.

50540278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25270141.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 50540278 is about 7109.1685871134. The cubic root of 50540278 is about 369.7253330416.

The spelling of 50540278 in words is "fifty million, five hundred forty thousand, two hundred seventy-eight".