20211452 has 6 divisors (see below), whose sum is σ = 35370048. Its totient is φ = 10105724.

The previous prime is 20211407. The next prime is 20211461. The reversal of 20211452 is 25411202.

It is a self number, because there is not a number n which added to its sum of digits gives 20211452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2526428 + ... + 2526435.

It is an arithmetic number, because the mean of its divisors is an integer number (5895008).

Almost surely, 2^20211452 is an apocalyptic number.

It is an amenable number.

20211452 is a deficient number, since it is larger than the sum of its proper divisors (15158596).

20211452 is a wasteful number, since it uses less digits than its factorization.

20211452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5052867 (or 5052865 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 20211452 is about 4495.7148486086. The cubic root of 20211452 is about 272.3950250766.

Adding to 20211452 its reverse (25411202), we get a palindrome (45622654).

The spelling of 20211452 in words is "twenty million, two hundred eleven thousand, four hundred fifty-two".