50121895 has 4 divisors (see below), whose sum is σ = 60146280. Its totient is φ = 40097512.

The previous prime is 50121887. The next prime is 50121919. The reversal of 50121895 is 59812105.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59812105 = 5 ⋅11962421.

It is a cyclic number.

It is not a de Polignac number, because 50121895 - 2³ = 50121887 is a prime.

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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5012185 + ... + 5012194.

It is an arithmetic number, because the mean of its divisors is an integer number (15036570).

Almost surely, 2^50121895 is an apocalyptic number.

50121895 is a deficient number, since it is larger than the sum of its proper divisors (10024385).

50121895 is a wasteful number, since it uses less digits than its factorization.

50121895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10024384.

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 50121895 is about 7079.6818431339. The cubic root of 50121895 is about 368.7022835892.

The spelling of 50121895 in words is "fifty million, one hundred twenty-one thousand, eight hundred ninety-five".