2240542521 has 12 divisors (see below), whose sum is σ = 3698673472. Its totient is φ = 1280309976.

The previous prime is 2240542517. The next prime is 2240542543. The reversal of 2240542521 is 1252450422.

2240542521 is a `hidden beast` number, since 2 + 2 + 405 + 4 + 252 + 1 = 666.

It is not a de Polignac number, because 2240542521 - 2² = 2240542517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2240542561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17782021 + ... + 17782146.

Almost surely, 2^2240542521 is an apocalyptic number.

2240542521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2240542521 is a deficient number, since it is larger than the sum of its proper divisors (1458130951).

2240542521 is a wasteful number, since it uses less digits than its factorization.

2240542521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35564180 (or 35564177 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 2240542521 is about 47334.3693419486. The cubic root of 2240542521 is about 1308.5321478204.

Adding to 2240542521 its reverse (1252450422), we get a palindrome (3492992943).

The spelling of 2240542521 in words is "two billion, two hundred forty million, five hundred forty-two thousand, five hundred twenty-one".