52112720 has 40 divisors (see below), whose sum is σ = 132179040. Its totient is φ = 18949760.

The previous prime is 52112713. The next prime is 52112737. The reversal of 52112720 is 2721125.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 52112692 and 52112701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28730 + ... + 30489.

It is an arithmetic number, because the mean of its divisors is an integer number (3304476).

Almost surely, 2^52112720 is an apocalyptic number.

It is an amenable number.

52112720 is an abundant number, since it is smaller than the sum of its proper divisors (80066320).

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

52112720 is a wasteful number, since it uses less digits than its factorization.

52112720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59243 (or 59237 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 52112720 is about 7218.9140457551. The cubic root of 52112720 is about 373.5206188995.

Adding to 52112720 its reverse (2721125), we get a palindrome (54833845).

The spelling of 52112720 in words is "fifty-two million, one hundred twelve thousand, seven hundred twenty".