651256241 has 2 divisors, whose sum is σ = 651256242. Its totient is φ = 651256240.

The previous prime is 651256211. The next prime is 651256261. The reversal of 651256241 is 142652156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 533425216 + 117831025 = 23096^2 + 10855^2 .

It is a cyclic number.

It is not a de Polignac number, because 651256241 - 2¹⁰ = 651255217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 651256198 and 651256207.

It is not a weakly prime, because it can be changed into another prime (651256211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325628120 + 325628121.

It is an arithmetic number, because the mean of its divisors is an integer number (325628121).

Almost surely, 2^651256241 is an apocalyptic number.

It is an amenable number.

651256241 is a deficient number, since it is larger than the sum of its proper divisors (1).

651256241 is an equidigital number, since it uses as much as digits as its factorization.

651256241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 32.

The square root of 651256241 is about 25519.7225886176. The cubic root of 651256241 is about 866.7968001007.

The spelling of 651256241 in words is "six hundred fifty-one million, two hundred fifty-six thousand, two hundred forty-one".