5121021 has 8 divisors (see below), whose sum is σ = 6882304. Its totient is φ = 3386880.

The previous prime is 5121007. The next prime is 5121031. The reversal of 5121021 is 1201215.

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

It is not a de Polignac number, because 5121021 - 2⁶ = 5120957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5120988 and 5121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5121031) 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, 6340 + ... + 7101.

It is an arithmetic number, because the mean of its divisors is an integer number (860288).

Almost surely, 2^5121021 is an apocalyptic number.

It is an amenable number.

5121021 is a deficient number, since it is larger than the sum of its proper divisors (1761283).

5121021 is a wasteful number, since it uses less digits than its factorization.

5121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13571.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 5121021 is about 2262.9672998079. The cubic root of 5121021 is about 172.3662310964.

Adding to 5121021 its reverse (1201215), we get a palindrome (6322236).

The spelling of 5121021 in words is "five million, one hundred twenty-one thousand, twenty-one".