52011420 has 24 divisors (see below), whose sum is σ = 145632144. Its totient is φ = 13869696.

The previous prime is 52011409. The next prime is 52011451. The reversal of 52011420 is 2411025.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 52011420.

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, 433369 + ... + 433488.

It is an arithmetic number, because the mean of its divisors is an integer number (6068006).

Almost surely, 2^52011420 is an apocalyptic number.

It is an amenable number.

52011420 is an abundant number, since it is smaller than the sum of its proper divisors (93620724).

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

52011420 is a wasteful number, since it uses less digits than its factorization.

52011420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866869 (or 866867 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 52011420 is about 7211.8943419881. The cubic root of 52011420 is about 373.2784375775.

Adding to 52011420 its reverse (2411025), we get a palindrome (54422445).

The spelling of 52011420 in words is "fifty-two million, eleven thousand, four hundred twenty".