20224501 has 4 divisors (see below), whose sum is σ = 22063104. Its totient is φ = 18385900.

The previous prime is 20224483. The next prime is 20224507. The reversal of 20224501 is 10542202.

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 a cyclic number.

It is not a de Polignac number, because 20224501 - 2⁵ = 20224469 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 (20224507) 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, 919285 + ... + 919306.

It is an arithmetic number, because the mean of its divisors is an integer number (5515776).

Almost surely, 2^20224501 is an apocalyptic number.

It is an amenable number.

20224501 is a deficient number, since it is larger than the sum of its proper divisors (1838603).

20224501 is a wasteful number, since it uses less digits than its factorization.

20224501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838602.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 20224501 is about 4497.1658853104. The cubic root of 20224501 is about 272.4536340606.

Adding to 20224501 its reverse (10542202), we get a palindrome (30766703).

The spelling of 20224501 in words is "twenty million, two hundred twenty-four thousand, five hundred one".