75161273 has 4 divisors (see below), whose sum is σ = 81994128. Its totient is φ = 68328420.

The previous prime is 75161269. The next prime is 75161287. The reversal of 75161273 is 37216157.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 75161273 - 2² = 75161269 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75161293) 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 in 3 ways as a sum of consecutive naturals, for example, 3416411 + ... + 3416432.

It is an arithmetic number, because the mean of its divisors is an integer number (20498532).

Almost surely, 2^75161273 is an apocalyptic number.

It is an amenable number.

75161273 is a deficient number, since it is larger than the sum of its proper divisors (6832855).

75161273 is a wasteful number, since it uses less digits than its factorization.

75161273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6832854.

The product of its digits is 8820, while the sum is 32.

The square root of 75161273 is about 8669.5601387844. The cubic root of 75161273 is about 422.0183893965.

Subtracting from 75161273 its reverse (37216157), we obtain a triangular number (37945116 = T₈₇₁₁).

The spelling of 75161273 in words is "seventy-five million, one hundred sixty-one thousand, two hundred seventy-three".