53250000 has 140 divisors (see below), whose sum is σ = 174372768. Its totient is φ = 14000000.

The previous prime is 53249983. The next prime is 53250023. The reversal of 53250000 is 5235.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 749965 + ... + 750035.

Almost surely, 2^53250000 is an apocalyptic number.

53250000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87186384).

53250000 is an abundant number, since it is smaller than the sum of its proper divisors (121122768).

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

53250000 is an frugal number, since it uses more digits than its factorization.

53250000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 15.

The square root of 53250000 is about 7297.2597596632. The cubic root of 53250000 is about 376.2182601821.

Adding to 53250000 its reverse (5235), we get a palindrome (53255235).

The spelling of 53250000 in words is "fifty-three million, two hundred fifty thousand".