145111543 has 4 divisors (see below), whose sum is σ = 145456648. Its totient is φ = 144766440.

The previous prime is 145111537. The next prime is 145111553. The reversal of 145111543 is 345111541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345111541 = 5683 ⋅60727.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145111543 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 (145111523) 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, 171921 + ... + 172762.

It is an arithmetic number, because the mean of its divisors is an integer number (36364162).

Almost surely, 2^145111543 is an apocalyptic number.

145111543 is a deficient number, since it is larger than the sum of its proper divisors (345105).

145111543 is an equidigital number, since it uses as much as digits as its factorization.

145111543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345104.

The product of its digits is 1200, while the sum is 25.

The square root of 145111543 is about 12046.2252593914. The cubic root of 145111543 is about 525.4934655834.

The spelling of 145111543 in words is "one hundred forty-five million, one hundred eleven thousand, five hundred forty-three".