50421619 has 4 divisors (see below), whose sum is σ = 50443096. Its totient is φ = 50400144.

The previous prime is 50421599. The next prime is 50421641. The reversal of 50421619 is 91612405.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50421619 is a prime.

It is a super-2 number, since 2×50421619² = 5084679325162322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50421659) 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, 6714 + ... + 12079.

It is an arithmetic number, because the mean of its divisors is an integer number (12610774).

Almost surely, 2^50421619 is an apocalyptic number.

50421619 is a deficient number, since it is larger than the sum of its proper divisors (21477).

50421619 is a wasteful number, since it uses less digits than its factorization.

50421619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21476.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 50421619 is about 7100.8181922931. The cubic root of 50421619 is about 369.4357579497.

It can be divided in two parts, 50421 and 619, that added together give a triangular number (51040 = T₃₁₉).

The spelling of 50421619 in words is "fifty million, four hundred twenty-one thousand, six hundred nineteen".