652215731 has 2 divisors, whose sum is σ = 652215732. Its totient is φ = 652215730.

The previous prime is 652215671. The next prime is 652215791. The reversal of 652215731 is 137512256.

It is a balanced prime because it is at equal distance from previous prime (652215671) and next prime (652215791).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-652215731 is a prime.

It is a super-2 number, since 2×652215731² = 850770719527728722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (652215791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326107865 + 326107866.

It is an arithmetic number, because the mean of its divisors is an integer number (326107866).

Almost surely, 2^652215731 is an apocalyptic number.

652215731 is a deficient number, since it is larger than the sum of its proper divisors (1).

652215731 is an equidigital number, since it uses as much as digits as its factorization.

652215731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 32.

The square root of 652215731 is about 25538.5146592358. The cubic root of 652215731 is about 867.2222725473. Note that the first 4 decimals are identical.

Adding to 652215731 its reverse (137512256), we get a palindrome (789727987).

The spelling of 652215731 in words is "six hundred fifty-two million, two hundred fifteen thousand, seven hundred thirty-one".