73143157 has 8 divisors (see below), whose sum is σ = 73749312. Its totient is φ = 72540000.

The previous prime is 73143131. The next prime is 73143173. The reversal of 73143157 is 75134137.

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 73143157 - 2¹⁹ = 72618869 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 (73143557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77593 + ... + 78529.

It is an arithmetic number, because the mean of its divisors is an integer number (9218664).

Almost surely, 2^73143157 is an apocalyptic number.

It is an amenable number.

73143157 is a deficient number, since it is larger than the sum of its proper divisors (606155).

73143157 is a wasteful number, since it uses less digits than its factorization.

73143157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499.

The product of its digits is 8820, while the sum is 31.

The square root of 73143157 is about 8552.3772718467. The cubic root of 73143157 is about 418.2069383532.

The spelling of 73143157 in words is "seventy-three million, one hundred forty-three thousand, one hundred fifty-seven".