74220533 has 2 divisors, whose sum is σ = 74220534. Its totient is φ = 74220532.

The previous prime is 74220527. The next prime is 74220581. The reversal of 74220533 is 33502247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48748324 + 25472209 = 6982^2 + 5047^2 .

It is a cyclic number.

It is not a de Polignac number, because 74220533 - 2¹⁸ = 73958389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74220233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37110266 + 37110267.

It is an arithmetic number, because the mean of its divisors is an integer number (37110267).

Almost surely, 2^74220533 is an apocalyptic number.

It is an amenable number.

74220533 is a deficient number, since it is larger than the sum of its proper divisors (1).

74220533 is an equidigital number, since it uses as much as digits as its factorization.

74220533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 26.

The square root of 74220533 is about 8615.1339513672. The cubic root of 74220533 is about 420.2502911013.

The spelling of 74220533 in words is "seventy-four million, two hundred twenty thousand, five hundred thirty-three".