75506243 has 4 divisors (see below), whose sum is σ = 75621480. Its totient is φ = 75391008.

The previous prime is 75506219. The next prime is 75506251. The reversal of 75506243 is 34260557.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34260557 = 37 ⋅925961.

It is a cyclic number.

It is not a de Polignac number, because 75506243 - 2²⁶ = 8397379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75506273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56630 + ... + 57947.

It is an arithmetic number, because the mean of its divisors is an integer number (18905370).

Almost surely, 2^75506243 is an apocalyptic number.

75506243 is a deficient number, since it is larger than the sum of its proper divisors (115237).

75506243 is a wasteful number, since it uses less digits than its factorization.

75506243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115236.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 75506243 is about 8689.4328353466. The cubic root of 75506243 is about 422.6630543692.

The spelling of 75506243 in words is "seventy-five million, five hundred six thousand, two hundred forty-three".