5100421 has 4 divisors (see below), whose sum is σ = 5105152. Its totient is φ = 5095692.

The previous prime is 5100409. The next prime is 5100467. The reversal of 5100421 is 1240015.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 5100421 - 2¹³ = 5092229 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 (5100521) 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, 130 + ... + 3196.

It is an arithmetic number, because the mean of its divisors is an integer number (1276288).

Almost surely, 2^5100421 is an apocalyptic number.

It is an amenable number.

5100421 is a deficient number, since it is larger than the sum of its proper divisors (4731).

5100421 is a wasteful number, since it uses less digits than its factorization.

5100421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4730.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 5100421 is about 2258.4111671704. The cubic root of 5100421 is about 172.1347983316.

Adding to 5100421 its reverse (1240015), we get a palindrome (6340436).

The spelling of 5100421 in words is "five million, one hundred thousand, four hundred twenty-one".