352412021 has 16 divisors (see below), whose sum is σ = 383348784. Its totient is φ = 322043904.

The previous prime is 352412009. The next prime is 352412051. The reversal of 352412021 is 120214253.

It can be written as a sum of positive squares in 8 ways, for example, as 38626225 + 313785796 = 6215^2 + 17714^2 .

It is not a de Polignac number, because 352412021 - 2²² = 348217717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 352411984 and 352412002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (352412051) 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, 1045565 + ... + 1045901.

It is an arithmetic number, because the mean of its divisors is an integer number (23959299).

Almost surely, 2^352412021 is an apocalyptic number.

It is an amenable number.

352412021 is a deficient number, since it is larger than the sum of its proper divisors (30936763).

352412021 is a wasteful number, since it uses less digits than its factorization.

352412021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 352412021 is about 18772.6402245395. The cubic root of 352412021 is about 706.3450478390.

Adding to 352412021 its reverse (120214253), we get a palindrome (472626274).

The spelling of 352412021 in words is "three hundred fifty-two million, four hundred twelve thousand, twenty-one".