651240133 has 2 divisors, whose sum is σ = 651240134. Its totient is φ = 651240132.

The previous prime is 651240113. The next prime is 651240137. The reversal of 651240133 is 331042156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 474934849 + 176305284 = 21793^2 + 13278^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-651240133 is a prime.

It is a super-2 number, since 2×651240133² = 848227421659715378, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 651240098 and 651240107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651240137) 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, 325620066 + 325620067.

It is an arithmetic number, because the mean of its divisors is an integer number (325620067).

Almost surely, 2^651240133 is an apocalyptic number.

It is an amenable number.

651240133 is a deficient number, since it is larger than the sum of its proper divisors (1).

651240133 is an equidigital number, since it uses as much as digits as its factorization.

651240133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 651240133 is about 25519.4069876241. The cubic root of 651240133 is about 866.7896536673.

Adding to 651240133 its reverse (331042156), we get a palindrome (982282289).

The spelling of 651240133 in words is "six hundred fifty-one million, two hundred forty thousand, one hundred thirty-three".