2254133521 has 4 divisors (see below), whose sum is σ = 2254608612. Its totient is φ = 2253658432.

The previous prime is 2254133507. The next prime is 2254133543. The reversal of 2254133521 is 1253314522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1253314522 = 2 ⋅626657261.

It can be written as a sum of positive squares in 2 ways, for example, as 969699600 + 1284433921 = 31140^2 + 35839^2 .

It is a cyclic number.

It is not a de Polignac number, because 2254133521 - 2¹⁵ = 2254100753 is a prime.

It is a super-2 number, since 2×2254133521² = 10162235860991714882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2254133521.

It is not an unprimeable number, because it can be changed into a prime (2254133591) 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, 230356 + ... + 239941.

It is an arithmetic number, because the mean of its divisors is an integer number (563652153).

Almost surely, 2^2254133521 is an apocalyptic number.

It is an amenable number.

2254133521 is a deficient number, since it is larger than the sum of its proper divisors (475091).

2254133521 is an equidigital number, since it uses as much as digits as its factorization.

2254133521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475090.

The product of its digits is 7200, while the sum is 28.

The square root of 2254133521 is about 47477.7160465834. The cubic root of 2254133521 is about 1311.1726424805.

The spelling of 2254133521 in words is "two billion, two hundred fifty-four million, one hundred thirty-three thousand, five hundred twenty-one".