5428121 has 4 divisors (see below), whose sum is σ = 5444112. Its totient is φ = 5412132.

The previous prime is 5428109. The next prime is 5428127. The reversal of 5428121 is 1218245.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5428121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5428127) 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, 7475 + ... + 8168.

It is an arithmetic number, because the mean of its divisors is an integer number (1361028).

Almost surely, 2^5428121 is an apocalyptic number.

It is an amenable number.

5428121 is a deficient number, since it is larger than the sum of its proper divisors (15991).

5428121 is a wasteful number, since it uses less digits than its factorization.

5428121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15990.

The product of its digits is 640, while the sum is 23.

The square root of 5428121 is about 2329.8328266208. The cubic root of 5428121 is about 175.7450790359.

The spelling of 5428121 in words is "five million, four hundred twenty-eight thousand, one hundred twenty-one".