35220621 has 4 divisors (see below), whose sum is σ = 46960832. Its totient is φ = 23480412.

The previous prime is 35220589. The next prime is 35220629. The reversal of 35220621 is 12602253.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 35220621 - 2⁵ = 35220589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35220629) 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, 5870101 + ... + 5870106.

It is an arithmetic number, because the mean of its divisors is an integer number (11740208).

Almost surely, 2^35220621 is an apocalyptic number.

It is an amenable number.

35220621 is a deficient number, since it is larger than the sum of its proper divisors (11740211).

35220621 is a wasteful number, since it uses less digits than its factorization.

35220621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11740210.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 35220621 is about 5934.6963696553. The cubic root of 35220621 is about 327.7924928076.

Adding to 35220621 its reverse (12602253), we get a palindrome (47822874).

The spelling of 35220621 in words is "thirty-five million, two hundred twenty thousand, six hundred twenty-one".