145545505 has 8 divisors (see below), whose sum is σ = 199605312. Its totient is φ = 99802608.

The previous prime is 145545481. The next prime is 145545509. The reversal of 145545505 is 505545541.

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 145545505 - 2¹³ = 145537313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145545509) 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, 2079187 + ... + 2079256.

It is an arithmetic number, because the mean of its divisors is an integer number (24950664).

Almost surely, 2^145545505 is an apocalyptic number.

It is an amenable number.

145545505 is a deficient number, since it is larger than the sum of its proper divisors (54059807).

145545505 is an equidigital number, since it uses as much as digits as its factorization.

145545505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4158455.

The product of its (nonzero) digits is 50000, while the sum is 34.

The square root of 145545505 is about 12064.2241772938. The cubic root of 145545505 is about 526.0167808262.

The spelling of 145545505 in words is "one hundred forty-five million, five hundred forty-five thousand, five hundred five".