52500000 has 192 divisors, whose sum is σ = 196874496. Its totient is φ = 12000000.

The previous prime is 52499977. The next prime is 52500013. The reversal of 52500000 is 525.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7499997 + ... + 7500003.

It is an arithmetic number, because the mean of its divisors is an integer number (1025388).

Almost surely, 2^52500000 is an apocalyptic number.

52500000 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 52500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98437248).

52500000 is an abundant number, since it is smaller than the sum of its proper divisors (144374496).

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

52500000 is an frugal number, since it uses more digits than its factorization.

52500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 12.

The square root of 52500000 is about 7245.6883730947. The cubic root of 52500000 is about 374.4436193609.

Adding to 52500000 its reverse (525), we get a palindrome (52500525).

52500000 divided by its reverse (525) gives a 5-th power (100000 = 10⁵).

The spelling of 52500000 in words is "fifty-two million, five hundred thousand".