75520723 has 4 divisors (see below), whose sum is σ = 75565000. Its totient is φ = 75476448.

The previous prime is 75520721. The next prime is 75520747. The reversal of 75520723 is 32702557.

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

It is a cyclic number.

It is not a de Polignac number, because 75520723 - 2¹ = 75520721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75520721) 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, 19473 + ... + 23026.

It is an arithmetic number, because the mean of its divisors is an integer number (18891250).

Almost surely, 2^75520723 is an apocalyptic number.

75520723 is a deficient number, since it is larger than the sum of its proper divisors (44277).

75520723 is a wasteful number, since it uses less digits than its factorization.

75520723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44276.

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 75520723 is about 8690.2659913262. The cubic root of 75520723 is about 422.6900709867.

The spelling of 75520723 in words is "seventy-five million, five hundred twenty thousand, seven hundred twenty-three".