75550369 has 2 divisors, whose sum is σ = 75550370. Its totient is φ = 75550368.

The previous prime is 75550357. The next prime is 75550373. The reversal of 75550369 is 96305557.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53582400 + 21967969 = 7320^2 + 4687^2 .

It is a cyclic number.

It is not a de Polignac number, because 75550369 - 2¹¹ = 75548321 is a prime.

It is a super-2 number, since 2×75550369² = 11415716512072322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75551369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37775184 + 37775185.

It is an arithmetic number, because the mean of its divisors is an integer number (37775185).

Almost surely, 2^75550369 is an apocalyptic number.

It is an amenable number.

75550369 is a deficient number, since it is larger than the sum of its proper divisors (1).

75550369 is an equidigital number, since it uses as much as digits as its factorization.

75550369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141750, while the sum is 40.

The square root of 75550369 is about 8691.9715254941. The cubic root of 75550369 is about 422.7453733814.

The spelling of 75550369 in words is "seventy-five million, five hundred fifty thousand, three hundred sixty-nine".