738045521 has 2 divisors, whose sum is σ = 738045522. Its totient is φ = 738045520.

The previous prime is 738045509. The next prime is 738045533. The reversal of 738045521 is 125540837.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (738045509) and next prime (738045533).

It can be written as a sum of positive squares in only one way, i.e., 709476496 + 28569025 = 26636^2 + 5345^2 .

It is a cyclic number.

It is not a de Polignac number, because 738045521 - 2⁶ = 738045457 is a prime.

It is a super-2 number, since 2×738045521² = 1089422382136322882, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (738045541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369022760 + 369022761.

It is an arithmetic number, because the mean of its divisors is an integer number (369022761).

Almost surely, 2^738045521 is an apocalyptic number.

It is an amenable number.

738045521 is a deficient number, since it is larger than the sum of its proper divisors (1).

738045521 is an equidigital number, since it uses as much as digits as its factorization.

738045521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 738045521 is about 27166.9932270761. The cubic root of 738045521 is about 903.7071457380.

The spelling of 738045521 in words is "seven hundred thirty-eight million, forty-five thousand, five hundred twenty-one".