2352021 has 16 divisors (see below), whose sum is σ = 3661824. Its totient is φ = 1314864.

The previous prime is 2352011. The next prime is 2352023. The reversal of 2352021 is 1202532.

It is not a de Polignac number, because 2352021 - 2⁵ = 2351989 is a prime.

2352021 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2352023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205 + ... + 2178.

It is an arithmetic number, because the mean of its divisors is an integer number (228864).

2^2352021 is an apocalyptic number.

2352021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2352021 is a deficient number, since it is larger than the sum of its proper divisors (1309803).

2352021 is a wasteful number, since it uses less digits than its factorization.

2352021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 2352021 is about 1533.6300075312. The cubic root of 2352021 is about 132.9883910194.

Adding to 2352021 its reverse (1202532), we get a palindrome (3554553).

The spelling of 2352021 in words is "two million, three hundred fifty-two thousand, twenty-one".