50861249 has 4 divisors (see below), whose sum is σ = 51185364. Its totient is φ = 50537136.

The previous prime is 50861243. The next prime is 50861267. The reversal of 50861249 is 94216805.

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

It can be written as a sum of positive squares in 2 ways, for example, as 38130625 + 12730624 = 6175^2 + 3568^2 .

It is a cyclic number.

It is not a de Polignac number, because 50861249 - 2⁸ = 50860993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50861243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161822 + ... + 162135.

It is an arithmetic number, because the mean of its divisors is an integer number (12796341).

Almost surely, 2^50861249 is an apocalyptic number.

It is an amenable number.

50861249 is a deficient number, since it is larger than the sum of its proper divisors (324115).

50861249 is a wasteful number, since it uses less digits than its factorization.

50861249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324114.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 50861249 is about 7131.7072990975. The cubic root of 50861249 is about 370.5063653753.

The spelling of 50861249 in words is "fifty million, eight hundred sixty-one thousand, two hundred forty-nine".