52997760 has 128 divisors (see below), whose sum is σ = 187761600. Its totient is φ = 14128128.

The previous prime is 52997759. The next prime is 52997767. The reversal of 52997760 is 6779925.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (52997767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15747 + ... + 18813.

Almost surely, 2^52997760 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52997760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93880800).

52997760 is an abundant number, since it is smaller than the sum of its proper divisors (134763840).

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

52997760 is a wasteful number, since it uses less digits than its factorization.

52997760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3095 (or 3077 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 52997760 is about 7279.9560438233. The cubic root of 52997760 is about 375.6232834733.

It can be divided in two parts, 529 and 97760, that added together give a palindrome (98289).

The spelling of 52997760 in words is "fifty-two million, nine hundred ninety-seven thousand, seven hundred sixty".