145747541 has 4 divisors (see below), whose sum is σ = 145777632.
Its totient is φ = 145717452.
The previous prime is 145747531. The next prime is 145747543.
145747541 is nontrivially palindromic in base 10.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 145747541 - 218 = 145485397 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 145747495 and 145747504.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (145747543) 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 3 ways as a sum of consecutive naturals, for example, 5945 + ... + 18078.
It is an arithmetic number, because the mean of its divisors is an integer number (36444408).
Almost surely, 2145747541 is an apocalyptic number.
It is an amenable number.
145747541 is a deficient number, since it is larger than the sum of its proper divisors (30091).
145747541 is an equidigital number, since it uses as much as digits as its factorization.
145747541 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 30090.
The product of its digits is 78400, while the sum is 38.
The square root of 145747541 is about 12072.5946258458.
The cubic root of 145747541 is about 526.2600614187.
The spelling of 145747541 in words is "one hundred forty-five million, seven hundred forty-seven thousand, five hundred forty-one".