53400450 has 96 divisors (see below), whose sum is σ = 143115840. Its totient is φ = 13132800.

The previous prime is 53400443. The next prime is 53400467. The reversal of 53400450 is 5400435.

It is a happy number.

53400450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 116622 + ... + 117078.

It is an arithmetic number, because the mean of its divisors is an integer number (1490790).

Almost surely, 2^53400450 is an apocalyptic number.

53400450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 53400450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71557920).

53400450 is an abundant number, since it is smaller than the sum of its proper divisors (89715390).

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

53400450 is a wasteful number, since it uses less digits than its factorization.

53400450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532 (or 527 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 53400450 is about 7307.5611526692. The cubic root of 53400450 is about 376.5722433674.

Adding to 53400450 its reverse (5400435), we get a palindrome (58800885).

The spelling of 53400450 in words is "fifty-three million, four hundred thousand, four hundred fifty".