5211820 has 24 divisors (see below), whose sum is σ = 11242224. Its totient is φ = 2028096.

The previous prime is 5211803. The next prime is 5211827. The reversal of 5211820 is 281125.

It is not an unprimeable number, because it can be changed into a prime (5211827) 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, 2782 + ... + 4261.

It is an arithmetic number, because the mean of its divisors is an integer number (468426).

Almost surely, 2^5211820 is an apocalyptic number.

It is an amenable number.

5211820 is an abundant number, since it is smaller than the sum of its proper divisors (6030404).

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

5211820 is a wasteful number, since it uses less digits than its factorization.

5211820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7089 (or 7087 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 5211820 is about 2282.9410855298. The cubic root of 5211820 is about 173.3789902738.

Adding to 5211820 its reverse (281125), we get a palindrome (5492945).

The spelling of 5211820 in words is "five million, two hundred eleven thousand, eight hundred twenty".