224957021 has 4 divisors (see below), whose sum is σ = 225127872. Its totient is φ = 224786172.

The previous prime is 224956981. The next prime is 224957041. The reversal of 224957021 is 120759422.

224957021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 224957021 - 2⁶ = 224956957 is a prime.

It is a super-2 number, since 2×224957021² = 101211322594388882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224957041) 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, 83435 + ... + 86088.

It is an arithmetic number, because the mean of its divisors is an integer number (56281968).

Almost surely, 2^224957021 is an apocalyptic number.

It is an amenable number.

224957021 is a deficient number, since it is larger than the sum of its proper divisors (170851).

224957021 is a wasteful number, since it uses less digits than its factorization.

224957021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170850.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 224957021 is about 14998.5672982455. The cubic root of 224957021 is about 608.1814701343.

The spelling of 224957021 in words is "two hundred twenty-four million, nine hundred fifty-seven thousand, twenty-one".