75450533 has 2 divisors, whose sum is σ = 75450534. Its totient is φ = 75450532.

The previous prime is 75450527. The next prime is 75450601. The reversal of 75450533 is 33505457.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73239364 + 2211169 = 8558^2 + 1487^2 .

It is a cyclic number.

It is not a de Polignac number, because 75450533 - 2⁴ = 75450517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75450533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75453533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37725266 + 37725267.

It is an arithmetic number, because the mean of its divisors is an integer number (37725267).

Almost surely, 2^75450533 is an apocalyptic number.

It is an amenable number.

75450533 is a deficient number, since it is larger than the sum of its proper divisors (1).

75450533 is an equidigital number, since it uses as much as digits as its factorization.

75450533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31500, while the sum is 32.

The square root of 75450533 is about 8686.2266261018. The cubic root of 75450533 is about 422.5590790720.

The spelling of 75450533 in words is "seventy-five million, four hundred fifty thousand, five hundred thirty-three".