35500021 has 4 divisors (see below), whose sum is σ = 35530272. Its totient is φ = 35469772.

The previous prime is 35500019. The next prime is 35500033. The reversal of 35500021 is 12000553.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12000553 = 619 ⋅19387.

It is a cyclic number.

It is not a de Polignac number, because 35500021 - 2¹ = 35500019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 35499968 and 35500004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35500121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13291 + ... + 15736.

It is an arithmetic number, because the mean of its divisors is an integer number (8882568).

Almost surely, 2^35500021 is an apocalyptic number.

It is an amenable number.

35500021 is a deficient number, since it is larger than the sum of its proper divisors (30251).

35500021 is a wasteful number, since it uses less digits than its factorization.

35500021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30250.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 35500021 is about 5958.1894061871. The cubic root of 35500021 is about 328.6569873777.

Adding to 35500021 its reverse (12000553), we get a palindrome (47500574).

The spelling of 35500021 in words is "thirty-five million, five hundred thousand, twenty-one".