75131375 has 32 divisors (see below), whose sum is σ = 103491648. Its totient is φ = 54000000.

The previous prime is 75131359. The next prime is 75131389. The reversal of 75131375 is 57313157.

It is not a de Polignac number, because 75131375 - 2⁴ = 75131359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 138605 + ... + 139145.

It is an arithmetic number, because the mean of its divisors is an integer number (3234114).

Almost surely, 2^75131375 is an apocalyptic number.

75131375 is a deficient number, since it is larger than the sum of its proper divisors (28360273).

75131375 is a wasteful number, since it uses less digits than its factorization.

75131375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668 (or 658 counting only the distinct ones).

The product of its digits is 11025, while the sum is 32.

The square root of 75131375 is about 8667.8356583406. The cubic root of 75131375 is about 421.9624244974.

It can be divided in two parts, 7513 and 1375, that added together give a palindrome (8888).

The spelling of 75131375 in words is "seventy-five million, one hundred thirty-one thousand, three hundred seventy-five".