50278397 has 8 divisors (see below), whose sum is σ = 55168344. Its totient is φ = 45534528.

The previous prime is 50278381. The next prime is 50278399. The reversal of 50278397 is 79387205.

It can be written as a sum of positive squares in 4 ways, for example, as 3136441 + 47141956 = 1771^2 + 6866^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50278397 - 2⁴ = 50278381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50278399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35798 + ... + 37175.

It is an arithmetic number, because the mean of its divisors is an integer number (6896043).

Almost surely, 2^50278397 is an apocalyptic number.

It is an amenable number.

50278397 is a deficient number, since it is larger than the sum of its proper divisors (4889947).

50278397 is a wasteful number, since it uses less digits than its factorization.

50278397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73039.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 50278397 is about 7090.7261264274. The cubic root of 50278397 is about 369.0856336288.

The spelling of 50278397 in words is "fifty million, two hundred seventy-eight thousand, three hundred ninety-seven".