352404521 has 12 divisors (see below), whose sum is σ = 413707140. Its totient is φ = 299285280.

The previous prime is 352404499. The next prime is 352404529. The reversal of 352404521 is 125404253.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 264420121 + 87984400 = 16261^2 + 9380^2 .

It is not a de Polignac number, because 352404521 - 2¹⁰ = 352403497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (352404529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27650 + ... + 38331.

It is an arithmetic number, because the mean of its divisors is an integer number (34475595).

Almost surely, 2^352404521 is an apocalyptic number.

It is an amenable number.

352404521 is a deficient number, since it is larger than the sum of its proper divisors (61302619).

352404521 is a wasteful number, since it uses less digits than its factorization.

352404521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66104 (or 66097 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 352404521 is about 18772.4404646812. The cubic root of 352404521 is about 706.3400370135.

Adding to 352404521 its reverse (125404253), we get a palindrome (477808774).

The spelling of 352404521 in words is "three hundred fifty-two million, four hundred four thousand, five hundred twenty-one".