162506143 has 4 divisors (see below), whose sum is σ = 164025000. Its totient is φ = 160987288.

The previous prime is 162506131. The next prime is 162506153. The reversal of 162506143 is 341605261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341605261 = 233 ⋅1466117.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162506143 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 (162506153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 759268 + ... + 759481.

It is an arithmetic number, because the mean of its divisors is an integer number (41006250).

Almost surely, 2^162506143 is an apocalyptic number.

162506143 is a deficient number, since it is larger than the sum of its proper divisors (1518857).

162506143 is a wasteful number, since it uses less digits than its factorization.

162506143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518856.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 162506143 is about 12747.7897299885. The cubic root of 162506143 is about 545.7033177788.

The spelling of 162506143 in words is "one hundred sixty-two million, five hundred six thousand, one hundred forty-three".