651025073 has 4 divisors (see below), whose sum is σ = 651349860. Its totient is φ = 650700288.

The previous prime is 651025049. The next prime is 651025087. The reversal of 651025073 is 370520156.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 218093824 + 432931249 = 14768^2 + 20807^2 .

It is a cyclic number.

It is not a de Polignac number, because 651025073 - 2¹⁴ = 651008689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (651025273) 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 in 3 ways as a sum of consecutive naturals, for example, 159368 + ... + 163401.

It is an arithmetic number, because the mean of its divisors is an integer number (162837465).

Almost surely, 2^651025073 is an apocalyptic number.

It is an amenable number.

651025073 is a deficient number, since it is larger than the sum of its proper divisors (324787).

651025073 is a wasteful number, since it uses less digits than its factorization.

651025073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324786.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 651025073 is about 25515.1929837891. The cubic root of 651025073 is about 866.6942294160.

The spelling of 651025073 in words is "six hundred fifty-one million, twenty-five thousand, seventy-three".