75457143 has 16 divisors (see below), whose sum is σ = 111955200. Its totient is φ = 50229720.

The previous prime is 75457141. The next prime is 75457147. The reversal of 75457143 is 34175457.

It is a happy number.

75457143 is a `hidden beast` number, since 7 + 545 + 71 + 43 = 666.

It is not a de Polignac number, because 75457143 - 2¹ = 75457141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75457098 and 75457107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75457141) 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 15 ways as a sum of consecutive naturals, for example, 20988 + ... + 24318.

It is an arithmetic number, because the mean of its divisors is an integer number (6997200).

Almost surely, 2^75457143 is an apocalyptic number.

75457143 is a deficient number, since it is larger than the sum of its proper divisors (36498057).

75457143 is a wasteful number, since it uses less digits than its factorization.

75457143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4179 (or 4173 counting only the distinct ones).

The product of its digits is 58800, while the sum is 36.

The square root of 75457143 is about 8686.6071051936. The cubic root of 75457143 is about 422.5714184324.

The spelling of 75457143 in words is "seventy-five million, four hundred fifty-seven thousand, one hundred forty-three".