50001621 has 8 divisors (see below), whose sum is σ = 66734304. Its totient is φ = 33301680.

The previous prime is 50001617. The next prime is 50001649. The reversal of 50001621 is 12610005.

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

It is not a de Polignac number, because 50001621 - 2² = 50001617 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 50001621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50001691) 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, 4366 + ... + 10911.

It is an arithmetic number, because the mean of its divisors is an integer number (8341788).

Almost surely, 2^50001621 is an apocalyptic number.

It is an amenable number.

50001621 is a deficient number, since it is larger than the sum of its proper divisors (16732683).

50001621 is a wasteful number, since it uses less digits than its factorization.

50001621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16371.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 50001621 is about 7071.1824329457. The cubic root of 50001621 is about 368.4071310311.

Adding to 50001621 its reverse (12610005), we get a palindrome (62611626).

The spelling of 50001621 in words is "fifty million, one thousand, six hundred twenty-one".