75490273 has 2 divisors, whose sum is σ = 75490274. Its totient is φ = 75490272.

The previous prime is 75490271. The next prime is 75490291. The reversal of 75490273 is 37209457.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65173329 + 10316944 = 8073^2 + 3212^2 .

It is a cyclic number.

It is not a de Polignac number, because 75490273 - 2¹ = 75490271 is a prime.

It is a super-2 number, since 2×75490273² = 11397562635229058, which contains 22 as substring.

Together with 75490271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (75490271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37745136 + 37745137.

It is an arithmetic number, because the mean of its divisors is an integer number (37745137).

Almost surely, 2^75490273 is an apocalyptic number.

It is an amenable number.

75490273 is a deficient number, since it is larger than the sum of its proper divisors (1).

75490273 is an equidigital number, since it uses as much as digits as its factorization.

75490273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 75490273 is about 8688.5138545093. The cubic root of 75490273 is about 422.6332537212.

The spelling of 75490273 in words is "seventy-five million, four hundred ninety thousand, two hundred seventy-three".