4200052521 has 32 divisors (see below), whose sum is σ = 6959727360. Its totient is φ = 2197794816.

The previous prime is 4200052511. The next prime is 4200052531. The reversal of 4200052521 is 1252500024.

It is a happy number.

4200052521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4200052511) and next prime (4200052531).

It is not a de Polignac number, because 4200052521 - 2⁷ = 4200052393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (4200052511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145776 + ... + 172193.

It is an arithmetic number, because the mean of its divisors is an integer number (217491480).

Almost surely, 2^4200052521 is an apocalyptic number.

It is an amenable number.

4200052521 is a deficient number, since it is larger than the sum of its proper divisors (2759674839).

4200052521 is a wasteful number, since it uses less digits than its factorization.

4200052521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318033.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 4200052521 is about 64807.8121911240. The cubic root of 4200052521 is about 1613.4353713049.

Adding to 4200052521 its reverse (1252500024), we get a palindrome (5452552545).

The spelling of 4200052521 in words is "four billion, two hundred million, fifty-two thousand, five hundred twenty-one".