2291530 has 8 divisors (see below), whose sum is σ = 4124772. Its totient is φ = 916608.

The previous prime is 2291491. The next prime is 2291539. The reversal of 2291530 is 351922.

It can be written as a sum of positive squares in 2 ways, for example, as 2169729 + 121801 = 1473^2 + 349^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2291530² = 10502219481800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2291539) 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, 114567 + ... + 114586.

2^2291530 is an apocalyptic number.

2291530 is a deficient number, since it is larger than the sum of its proper divisors (1833242).

2291530 is a wasteful number, since it uses less digits than its factorization.

2291530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229160.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 2291530 is about 1513.7800368614. The cubic root of 2291530 is about 131.8383773331.

The spelling of 2291530 in words is "two million, two hundred ninety-one thousand, five hundred thirty".