52447500 has 300 divisors, whose sum is σ = 201098128. Its totient is φ = 11664000.

The previous prime is 52447489. The next prime is 52447517. The reversal of 52447500 is 574425.

It is a tau number, because it is divible by the number of its divisors (300).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Saint-Exupery number, since it is equal to the product of the sides of a Pythagorean triangle: 555 × 525 × 180.

It is an unprimeable number.

It is a polite number, since it can be written in 99 ways as a sum of consecutive naturals, for example, 1417482 + ... + 1417518.

Almost surely, 2^52447500 is an apocalyptic number.

52447500 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 52447500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100549064).

52447500 is an abundant number, since it is smaller than the sum of its proper divisors (148650628).

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

52447500 is a wasteful number, since it uses less digits than its factorization.

52447500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 52447500 is about 7242.0646227440. The cubic root of 52447500 is about 374.3187631932.

The spelling of 52447500 in words is "fifty-two million, four hundred forty-seven thousand, five hundred".