52121756 has 12 divisors (see below), whose sum is σ = 91910280. Its totient is φ = 25861680.

The previous prime is 52121753. The next prime is 52121767. The reversal of 52121756 is 65712125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52121753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49211 + ... + 50258.

It is an arithmetic number, because the mean of its divisors is an integer number (7659190).

Almost surely, 2^52121756 is an apocalyptic number.

It is an amenable number.

52121756 is a deficient number, since it is larger than the sum of its proper divisors (39788524).

52121756 is a wasteful number, since it uses less digits than its factorization.

52121756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99604 (or 99602 counting only the distinct ones).

The product of its digits is 4200, while the sum is 29.

The square root of 52121756 is about 7219.5398745349. The cubic root of 52121756 is about 373.5422063178.

The spelling of 52121756 in words is "fifty-two million, one hundred twenty-one thousand, seven hundred fifty-six".