52650780 has 96 divisors (see below), whose sum is σ = 181461504. Its totient is φ = 11107584.

The previous prime is 52650779. The next prime is 52650781. The reversal of 52650780 is 8705625.

52650780 = 883² + 884² + ... + 945².

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (52650779) and next prime (52650781).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52650781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 639 + ... + 10281.

It is an arithmetic number, because the mean of its divisors is an integer number (1890224).

Almost surely, 2^52650780 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 52650780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90730752).

52650780 is an abundant number, since it is smaller than the sum of its proper divisors (128810724).

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

52650780 is a wasteful number, since it uses less digits than its factorization.

52650780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9675 (or 9673 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 52650780 is about 7256.0857216546. The cubic root of 52650780 is about 374.8017440929.

The spelling of 52650780 in words is "fifty-two million, six hundred fifty thousand, seven hundred eighty".