145551543 has 4 divisors (see below), whose sum is σ = 194068728. Its totient is φ = 97034360.

The previous prime is 145551481. The next prime is 145551547. The reversal of 145551543 is 345155541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145551543 - 2⁹ = 145551031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145551547) 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, 24258588 + ... + 24258593.

It is an arithmetic number, because the mean of its divisors is an integer number (48517182).

Almost surely, 2^145551543 is an apocalyptic number.

145551543 is a deficient number, since it is larger than the sum of its proper divisors (48517185).

145551543 is an equidigital number, since it uses as much as digits as its factorization.

145551543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48517184.

The product of its digits is 30000, while the sum is 33.

The square root of 145551543 is about 12064.4744187221. The cubic root of 145551543 is about 526.0240547149.

The spelling of 145551543 in words is "one hundred forty-five million, five hundred fifty-one thousand, five hundred forty-three".