652056121 has 4 divisors (see below), whose sum is σ = 652112500. Its totient is φ = 651999744.

The previous prime is 652056103. The next prime is 652056133. The reversal of 652056121 is 121650256.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 142922025 + 509134096 = 11955^2 + 22564^2 .

It is a cyclic number.

It is not a de Polignac number, because 652056121 - 2⁹ = 652055609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 652056121.

It is not an unprimeable number, because it can be changed into a prime (652056151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3816 + ... + 36313.

It is an arithmetic number, because the mean of its divisors is an integer number (163028125).

Almost surely, 2^652056121 is an apocalyptic number.

It is an amenable number.

652056121 is a deficient number, since it is larger than the sum of its proper divisors (56379).

652056121 is a wasteful number, since it uses less digits than its factorization.

652056121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56378.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 652056121 is about 25535.3895799535. The cubic root of 652056121 is about 867.1515246679.

The spelling of 652056121 in words is "six hundred fifty-two million, fifty-six thousand, one hundred twenty-one".