52660000 has 60 divisors (see below), whose sum is σ = 129600702. Its totient is φ = 21056000.

The previous prime is 52659973. The next prime is 52660007. The reversal of 52660000 is 6625.

It can be written as a sum of positive squares in 5 ways, for example, as 300304 + 52359696 = 548^2 + 7236^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 52660000.

It is not an unprimeable number, because it can be changed into a prime (52660007) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 18684 + ... + 21316.

Almost surely, 2^52660000 is an apocalyptic number.

52660000 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 52660000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64800351).

52660000 is an abundant number, since it is smaller than the sum of its proper divisors (76940702).

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

52660000 is an equidigital number, since it uses as much as digits as its factorization.

52660000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2663 (or 2640 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 52660000 is about 7256.7210226107. The cubic root of 52660000 is about 374.8236207577.

Adding to 52660000 its reverse (6625), we get a palindrome (52666625).

The spelling of 52660000 in words is "fifty-two million, six hundred sixty thousand".