229098521 has 4 divisors (see below), whose sum is σ = 236998500. Its totient is φ = 221198544.

The previous prime is 229098503. The next prime is 229098533. The reversal of 229098521 is 125890922.

229098521 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.

It can be written as a sum of positive squares in 2 ways, for example, as 120209296 + 108889225 = 10964^2 + 10435^2 .

It is not a de Polignac number, because 229098521 - 2²² = 224904217 is a prime.

It is a super-2 number, since 2×229098521² = 104972264648774882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (229098421) 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, 3949946 + ... + 3950003.

It is an arithmetic number, because the mean of its divisors is an integer number (59249625).

Almost surely, 2^229098521 is an apocalyptic number.

It is an amenable number.

229098521 is a deficient number, since it is larger than the sum of its proper divisors (7899979).

229098521 is an equidigital number, since it uses as much as digits as its factorization.

229098521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7899978.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 229098521 is about 15136.0008258456. Note that the first 3 decimals coincide. The cubic root of 229098521 is about 611.8910419110.

The spelling of 229098521 in words is "two hundred twenty-nine million, ninety-eight thousand, five hundred twenty-one".