652652021 has 12 divisors (see below), whose sum is σ = 783699840. Its totient is φ = 541369080.

The previous prime is 652652009. The next prime is 652652027. The reversal of 652652021 is 120256256.

It is a de Polignac number, because none of the positive numbers 2^k-652652021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652652027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213311 + ... + 216348.

It is an arithmetic number, because the mean of its divisors is an integer number (65308320).

Almost surely, 2^652652021 is an apocalyptic number.

It is an amenable number.

652652021 is a deficient number, since it is larger than the sum of its proper divisors (131047819).

652652021 is a wasteful number, since it uses less digits than its factorization.

652652021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429704 (or 429697 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 652652021 is about 25547.0550357571. The cubic root of 652652021 is about 867.4156012536.

The spelling of 652652021 in words is "six hundred fifty-two million, six hundred fifty-two thousand, twenty-one".