35563921 has 4 divisors (see below), whose sum is σ = 36051172. Its totient is φ = 35076672.

The previous prime is 35563909. The next prime is 35563951. The reversal of 35563921 is 12936553.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25553025 + 10010896 = 5055^2 + 3164^2 .

It is a cyclic number.

It is not a de Polignac number, because 35563921 - 2²⁵ = 2009489 is a prime.

It is a super-3 number, since 3×35563921³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (35563951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243516 + ... + 243661.

It is an arithmetic number, because the mean of its divisors is an integer number (9012793).

Almost surely, 2^35563921 is an apocalyptic number.

It is an amenable number.

35563921 is a deficient number, since it is larger than the sum of its proper divisors (487251).

35563921 is an equidigital number, since it uses as much as digits as its factorization.

35563921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487250.

The product of its digits is 24300, while the sum is 34.

The square root of 35563921 is about 5963.5493625860. The cubic root of 35563921 is about 328.8540632553.

The spelling of 35563921 in words is "thirty-five million, five hundred sixty-three thousand, nine hundred twenty-one".