652121445 has 32 divisors (see below), whose sum is σ = 1130481792. Its totient is φ = 319721472.

The previous prime is 652121443. The next prime is 652121489. The reversal of 652121445 is 544121256.

It is not a de Polignac number, because 652121445 - 2¹ = 652121443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652121443) 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 31 ways as a sum of consecutive naturals, for example, 18772 + ... + 40701.

It is an arithmetic number, because the mean of its divisors is an integer number (35327556).

Almost surely, 2^652121445 is an apocalyptic number.

It is an amenable number.

652121445 is a deficient number, since it is larger than the sum of its proper divisors (478360347).

652121445 is a wasteful number, since it uses less digits than its factorization.

652121445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59541.

The product of its digits is 9600, while the sum is 30.

The square root of 652121445 is about 25536.6686355131. The cubic root of 652121445 is about 867.1804812320.

It can be divided in two parts, 6521 and 21445, that added together give a triangular number (27966 = T₂₃₆).

The spelling of 652121445 in words is "six hundred fifty-two million, one hundred twenty-one thousand, four hundred forty-five".