75143071 has 4 divisors (see below), whose sum is σ = 75287272. Its totient is φ = 74998872.

The previous prime is 75143051. The next prime is 75143099. The reversal of 75143071 is 17034157.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17034157 = 7 ⋅2433451.

It is a cyclic number.

It is not a de Polignac number, because 75143071 - 2⁷ = 75142943 is a prime.

It is a super-2 number, since 2×75143071² = 11292962238622082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75143051) 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 3 ways as a sum of consecutive naturals, for example, 71316 + ... + 72361.

It is an arithmetic number, because the mean of its divisors is an integer number (18821818).

Almost surely, 2^75143071 is an apocalyptic number.

75143071 is a deficient number, since it is larger than the sum of its proper divisors (144201).

75143071 is a wasteful number, since it uses less digits than its factorization.

75143071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144200.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 75143071 is about 8668.5103103128. The cubic root of 75143071 is about 421.9843195509.

It can be divided in two parts, 7514 and 3071, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 75143071 in words is "seventy-five million, one hundred forty-three thousand, seventy-one".