652326021 has 32 divisors (see below), whose sum is σ = 995904000. Its totient is φ = 421692480.

The previous prime is 652326013. The next prime is 652326053. The reversal of 652326021 is 120623256.

652326021 is a `hidden beast` number, since 6 + 52 + 3 + 2 + 602 + 1 = 666.

It is not a de Polignac number, because 652326021 - 2³ = 652326013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652326121) 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, 347716 + ... + 349586.

It is an arithmetic number, because the mean of its divisors is an integer number (31122000).

Almost surely, 2^652326021 is an apocalyptic number.

It is an amenable number.

652326021 is a deficient number, since it is larger than the sum of its proper divisors (343577979).

652326021 is a wasteful number, since it uses less digits than its factorization.

652326021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266 (or 2260 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 652326021 is about 25540.6738556366. The cubic root of 652326021 is about 867.2711523627.

Adding to 652326021 its reverse (120623256), we get a palindrome (772949277).

It can be divided in two parts, 65232 and 6021, that added together give a triangular number (71253 = T₃₇₇).

The spelling of 652326021 in words is "six hundred fifty-two million, three hundred twenty-six thousand, twenty-one".