652121157 has 4 divisors (see below), whose sum is σ = 869494880. Its totient is φ = 434747436.

The previous prime is 652121149. The next prime is 652121161. The reversal of 652121157 is 751121256.

652121157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 652121157 - 2³ = 652121149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652121137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108686857 + ... + 108686862.

It is an arithmetic number, because the mean of its divisors is an integer number (217373720).

Almost surely, 2^652121157 is an apocalyptic number.

It is an amenable number.

652121157 is a deficient number, since it is larger than the sum of its proper divisors (217373723).

652121157 is a wasteful number, since it uses less digits than its factorization.

652121157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217373722.

The product of its digits is 4200, while the sum is 30.

The square root of 652121157 is about 25536.6629965624. The cubic root of 652121157 is about 867.1803535728.

Subtracting 652121157 from its reverse (751121256), we obtain a palindrome (99000099).

The spelling of 652121157 in words is "six hundred fifty-two million, one hundred twenty-one thousand, one hundred fifty-seven".