75113249 has 4 divisors (see below), whose sum is σ = 75150660. Its totient is φ = 75075840.

The previous prime is 75113221. The next prime is 75113263. The reversal of 75113249 is 94231157.

Added to its reverse (94231157) it gives a triangular number (169344406 = T₁₈₄₀₃).

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16483600 + 58629649 = 4060^2 + 7657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75113249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75113209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15512 + ... + 19769.

It is an arithmetic number, because the mean of its divisors is an integer number (18787665).

Almost surely, 2^75113249 is an apocalyptic number.

It is an amenable number.

75113249 is a deficient number, since it is larger than the sum of its proper divisors (37411).

75113249 is a wasteful number, since it uses less digits than its factorization.

75113249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37410.

The product of its digits is 7560, while the sum is 32.

The square root of 75113249 is about 8666.7900055326. The cubic root of 75113249 is about 421.9284879159.

Adding to 75113249 its reverse (94231157), we get a triangular number (169344406 = T₁₈₄₀₃).

The spelling of 75113249 in words is "seventy-five million, one hundred thirteen thousand, two hundred forty-nine".