52299840 has 112 divisors (see below), whose sum is σ = 167591232. Its totient is φ = 13817856.

The previous prime is 52299823. The next prime is 52299881. The reversal of 52299840 is 4899225.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150547 + ... + 150893.

Almost surely, 2^52299840 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 52299840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83795616).

52299840 is an abundant number, since it is smaller than the sum of its proper divisors (115291392).

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

52299840 is a wasteful number, since it uses less digits than its factorization.

52299840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 52299840 is about 7231.8628305576. The cubic root of 52299840 is about 373.9671489729.

The spelling of 52299840 in words is "fifty-two million, two hundred ninety-nine thousand, eight hundred forty".