53440450 has 48 divisors (see below), whose sum is σ = 114367680. Its totient is φ = 18198720.

The previous prime is 53440447. The next prime is 53440481. The reversal of 53440450 is 5404435.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62224 + ... + 63076.

It is an arithmetic number, because the mean of its divisors is an integer number (2382660).

Almost surely, 2^53440450 is an apocalyptic number.

53440450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

53440450 is an abundant number, since it is smaller than the sum of its proper divisors (60927230).

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

53440450 is a wasteful number, since it uses less digits than its factorization.

53440450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051 (or 1046 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 53440450 is about 7310.2975315646. The cubic root of 53440450 is about 376.6662446371. Note that the first 3 decimals are identical.

Adding to 53440450 its reverse (5404435), we get a palindrome (58844885).

The spelling of 53440450 in words is "fifty-three million, four hundred forty thousand, four hundred fifty".