651454879 has 2 divisors, whose sum is σ = 651454880. Its totient is φ = 651454878.

The previous prime is 651454787. The next prime is 651454889. The reversal of 651454879 is 978454156.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 651454879 - 2¹¹ = 651452831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651454889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325727439 + 325727440.

It is an arithmetic number, because the mean of its divisors is an integer number (325727440).

Almost surely, 2^651454879 is an apocalyptic number.

651454879 is a deficient number, since it is larger than the sum of its proper divisors (1).

651454879 is an equidigital number, since it uses as much as digits as its factorization.

651454879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 49.

The square root of 651454879 is about 25523.6141445525. The cubic root of 651454879 is about 866.8849176339.

The spelling of 651454879 in words is "six hundred fifty-one million, four hundred fifty-four thousand, eight hundred seventy-nine".