652150721 has 4 divisors (see below), whose sum is σ = 652215744. Its totient is φ = 652085700.

The previous prime is 652150703. The next prime is 652150739. The reversal of 652150721 is 127051256.

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, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (652150703) and next prime (652150739).

It is a cyclic number.

It is not a de Polignac number, because 652150721 - 2⁶ = 652150657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (652150781) 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, 13925 + ... + 38706.

It is an arithmetic number, because the mean of its divisors is an integer number (163053936).

Almost surely, 2^652150721 is an apocalyptic number.

It is an amenable number.

652150721 is a deficient number, since it is larger than the sum of its proper divisors (65023).

652150721 is a wasteful number, since it uses less digits than its factorization.

652150721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65022.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 652150721 is about 25537.2418440207. The cubic root of 652150721 is about 867.1934579539.

The spelling of 652150721 in words is "six hundred fifty-two million, one hundred fifty thousand, seven hundred twenty-one".