145520545 has 8 divisors (see below), whose sum is σ = 174900096. Its totient is φ = 116232816.

The previous prime is 145520539. The next prime is 145520549. The reversal of 145520545 is 545025541.

145520545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 145520545 - 2¹¹ = 145518497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145520549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19417 + ... + 25846.

It is an arithmetic number, because the mean of its divisors is an integer number (21862512).

Almost surely, 2^145520545 is an apocalyptic number.

It is an amenable number.

145520545 is a deficient number, since it is larger than the sum of its proper divisors (29379551).

145520545 is an equidigital number, since it uses as much as digits as its factorization.

145520545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45911.

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 145520545 is about 12063.1896694034. The cubic root of 145520545 is about 525.9867097511.

The spelling of 145520545 in words is "one hundred forty-five million, five hundred twenty thousand, five hundred forty-five".