52500020 has 12 divisors (see below), whose sum is σ = 110250084. Its totient is φ = 21000000.

The previous prime is 52500013. The next prime is 52500023. The reversal of 52500020 is 2000525.

It can be written as a sum of positive squares in 2 ways, for example, as 15460624 + 37039396 = 3932^2 + 6086^2 .

It is a junction number, because it is equal to n+sod(n) for n = 52499968 and 52500004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52500023) 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, 1312481 + ... + 1312520.

It is an arithmetic number, because the mean of its divisors is an integer number (9187507).

Almost surely, 2^52500020 is an apocalyptic number.

It is an amenable number.

52500020 is an abundant number, since it is smaller than the sum of its proper divisors (57750064).

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

52500020 is a wasteful number, since it uses less digits than its factorization.

52500020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625010 (or 2625008 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 14.

The square root of 52500020 is about 7245.6897532257. The cubic root of 52500020 is about 374.4436669093.

Adding to 52500020 its reverse (2000525), we get a palindrome (54500545).

The spelling of 52500020 in words is "fifty-two million, five hundred thousand, twenty".