5251921 has 8 divisors (see below), whose sum is σ = 5410944. Its totient is φ = 5094960.

The previous prime is 5251919. The next prime is 5251933. The reversal of 5251921 is 1291525.

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

It is a cyclic number.

It is not a de Polignac number, because 5251921 - 2¹ = 5251919 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 (5251951) 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, 5731 + ... + 6583.

It is an arithmetic number, because the mean of its divisors is an integer number (676368).

Almost surely, 2^5251921 is an apocalyptic number.

It is an amenable number.

5251921 is a deficient number, since it is larger than the sum of its proper divisors (159023).

5251921 is a wasteful number, since it uses less digits than its factorization.

5251921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031.

The product of its digits is 900, while the sum is 25.

The square root of 5251921 is about 2291.7070057056. The cubic root of 5251921 is about 173.8225279044.

The spelling of 5251921 in words is "five million, two hundred fifty-one thousand, nine hundred twenty-one".