651285071 has 2 divisors, whose sum is σ = 651285072. Its totient is φ = 651285070.

The previous prime is 651285053. The next prime is 651285073. The reversal of 651285071 is 170582156.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 651285071 - 2¹⁴ = 651268687 is a prime.

Together with 651285073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651285073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325642535 + 325642536.

It is an arithmetic number, because the mean of its divisors is an integer number (325642536).

Almost surely, 2^651285071 is an apocalyptic number.

651285071 is a deficient number, since it is larger than the sum of its proper divisors (1).

651285071 is an equidigital number, since it uses as much as digits as its factorization.

651285071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 35.

The square root of 651285071 is about 25520.2874396038. The cubic root of 651285071 is about 866.8095904492.

The spelling of 651285071 in words is "six hundred fifty-one million, two hundred eighty-five thousand, seventy-one".