651959051 has 2 divisors, whose sum is σ = 651959052. Its totient is φ = 651959050.

The previous prime is 651959041. The next prime is 651959053. The reversal of 651959051 is 150959156.

651959051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 651959051 - 2⁶ = 651958987 is a prime.

It is a Sophie Germain prime.

Together with 651959053, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (651959053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325979525 + 325979526.

It is an arithmetic number, because the mean of its divisors is an integer number (325979526).

Almost surely, 2^651959051 is an apocalyptic number.

651959051 is a deficient number, since it is larger than the sum of its proper divisors (1).

651959051 is an equidigital number, since it uses as much as digits as its factorization.

651959051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60750, while the sum is 41.

The square root of 651959051 is about 25533.4888137129. The cubic root of 651959051 is about 867.1084922902.

The spelling of 651959051 in words is "six hundred fifty-one million, nine hundred fifty-nine thousand, fifty-one".