35521421 has 8 divisors (see below), whose sum is σ = 38342304. Its totient is φ = 32713200.

The previous prime is 35521417. The next prime is 35521429. The reversal of 35521421 is 12412553.

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

It is not a de Polignac number, because 35521421 - 2² = 35521417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35521429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3146 + ... + 8996.

It is an arithmetic number, because the mean of its divisors is an integer number (4792788).

Almost surely, 2^35521421 is an apocalyptic number.

It is an amenable number.

35521421 is a deficient number, since it is larger than the sum of its proper divisors (2820883).

35521421 is a wasteful number, since it uses less digits than its factorization.

35521421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6331.

The product of its digits is 1200, while the sum is 23.

The square root of 35521421 is about 5959.9849832026. The cubic root of 35521421 is about 328.7230140687.

Adding to 35521421 its reverse (12412553), we get a palindrome (47933974).

The spelling of 35521421 in words is "thirty-five million, five hundred twenty-one thousand, four hundred twenty-one".