730531457 has 4 divisors (see below), whose sum is σ = 730735956. Its totient is φ = 730326960.

The previous prime is 730531427. The next prime is 730531469. The reversal of 730531457 is 754135037.

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 139263601 + 591267856 = 11801^2 + 24316^2 .

It is a cyclic number.

It is not a de Polignac number, because 730531457 - 2¹⁰ = 730530433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (730531427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96794 + ... + 104067.

It is an arithmetic number, because the mean of its divisors is an integer number (182683989).

Almost surely, 2^730531457 is an apocalyptic number.

It is an amenable number.

730531457 is a deficient number, since it is larger than the sum of its proper divisors (204499).

730531457 is a wasteful number, since it uses less digits than its factorization.

730531457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204498.

The product of its (nonzero) digits is 44100, while the sum is 35.

The square root of 730531457 is about 27028.3454358568. The cubic root of 730531457 is about 900.6297884115.

The spelling of 730531457 in words is "seven hundred thirty million, five hundred thirty-one thousand, four hundred fifty-seven".