2253532440 has 64 divisors (see below), whose sum is σ = 6888175200. Its totient is φ = 589601792.

The previous prime is 2253532439. The next prime is 2253532511. The reversal of 2253532440 is 442353522.

It is a super-3 number, since 3×2253532440³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2253532398 and 2253532407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170805 + ... + 183524.

Almost surely, 2^2253532440 is an apocalyptic number.

2253532440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2253532440 is an abundant number, since it is smaller than the sum of its proper divisors (4634642760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2253532440 is a wasteful number, since it uses less digits than its factorization.

2253532440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354396 (or 354392 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 30.

The square root of 2253532440 is about 47471.3854864170. The cubic root of 2253532440 is about 1311.0560875650.

Adding to 2253532440 its reverse (442353522), we get a palindrome (2695885962).

The spelling of 2253532440 in words is "two billion, two hundred fifty-three million, five hundred thirty-two thousand, four hundred forty".