52106420 has 24 divisors (see below), whose sum is σ = 111490344. Its totient is φ = 20448896.

The previous prime is 52106419. The next prime is 52106423. The reversal of 52106420 is 2460125.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11478544 + 40627876 = 3388^2 + 6374^2 .

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 = 52106392 and 52106401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52106423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23519 + ... + 25638.

It is an arithmetic number, because the mean of its divisors is an integer number (4645431).

Almost surely, 2^52106420 is an apocalyptic number.

It is an amenable number.

52106420 is an abundant number, since it is smaller than the sum of its proper divisors (59383924).

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

52106420 is a wasteful number, since it uses less digits than its factorization.

52106420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49219 (or 49217 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 52106420 is about 7218.4776788461. The cubic root of 52106420 is about 373.5055664342.

Adding to 52106420 its reverse (2460125), we get a palindrome (54566545).

The spelling of 52106420 in words is "fifty-two million, one hundred six thousand, four hundred twenty".