732251521 has 2 divisors, whose sum is σ = 732251522. Its totient is φ = 732251520.

The previous prime is 732251501. The next prime is 732251543. The reversal of 732251521 is 125152237.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 732243600 + 7921 = 27060^2 + 89^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-732251521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 732251521.

It is not a weakly prime, because it can be changed into another prime (732251501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 366125760 + 366125761.

It is an arithmetic number, because the mean of its divisors is an integer number (366125761).

Almost surely, 2^732251521 is an apocalyptic number.

It is an amenable number.

732251521 is a deficient number, since it is larger than the sum of its proper divisors (1).

732251521 is an equidigital number, since it uses as much as digits as its factorization.

732251521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 28.

The square root of 732251521 is about 27060.1463595451. The cubic root of 732251521 is about 901.3360900190.

The spelling of 732251521 in words is "seven hundred thirty-two million, two hundred fifty-one thousand, five hundred twenty-one".