75144157 has 8 divisors (see below), whose sum is σ = 82049472. Its totient is φ = 68251200.

The previous prime is 75144149. The next prime is 75144163.

75144157 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75144157 - 2³ = 75144149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75144187) 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 7 ways as a sum of consecutive naturals, for example, 13557 + ... + 18277.

It is an arithmetic number, because the mean of its divisors is an integer number (10256184).

Almost surely, 2^75144157 is an apocalyptic number.

It is an amenable number.

75144157 is a deficient number, since it is larger than the sum of its proper divisors (6905315).

75144157 is a wasteful number, since it uses less digits than its factorization.

75144157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6179.

The product of its digits is 19600, while the sum is 34.

The square root of 75144157 is about 8668.5729506073. The cubic root of 75144157 is about 421.9863524408.

The spelling of 75144157 in words is "seventy-five million, one hundred forty-four thousand, one hundred fifty-seven".