52121025 has 36 divisors (see below), whose sum is σ = 101846160. Its totient is φ = 25269600.

The previous prime is 52121021. The next prime is 52121053. The reversal of 52121025 is 52012125.

52121025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52121025 - 2² = 52121021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52120989 and 52121007.

It is not an unprimeable number, because it can be changed into a prime (52121021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8055 + ... + 13004.

It is an arithmetic number, because the mean of its divisors is an integer number (2829060).

Almost surely, 2^52121025 is an apocalyptic number.

52121025 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

52121025 is a deficient number, since it is larger than the sum of its proper divisors (49725135).

52121025 is a wasteful number, since it uses less digits than its factorization.

52121025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21086 (or 21078 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 52121025 is about 7219.4892478623. The cubic root of 52121025 is about 373.5404600181.

Subtracting from 52121025 its reverse (52012125), we obtain a square (108900 = 330²).

The spelling of 52121025 in words is "fifty-two million, one hundred twenty-one thousand, twenty-five".