730525321 has 8 divisors (see below), whose sum is σ = 741959424. Its totient is φ = 719106960.

The previous prime is 730525267. The next prime is 730525339. The reversal of 730525321 is 123525037.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 730525321 - 2⁷ = 730525193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 730525321.

It is not an unprimeable number, because it can be changed into a prime (730525421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119151 + ... + 125131.

It is an arithmetic number, because the mean of its divisors is an integer number (92744928).

Almost surely, 2^730525321 is an apocalyptic number.

It is an amenable number.

730525321 is a deficient number, since it is larger than the sum of its proper divisors (11434103).

730525321 is a wasteful number, since it uses less digits than its factorization.

730525321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7871.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 730525321 is about 27028.2319251556. The cubic root of 730525321 is about 900.6272668318.

The spelling of 730525321 in words is "seven hundred thirty million, five hundred twenty-five thousand, three hundred twenty-one".