145415305 has 32 divisors (see below), whose sum is σ = 204643584. Its totient is φ = 97134336.

The previous prime is 145415261. The next prime is 145415317. The reversal of 145415305 is 503514541.

It is a cyclic number.

It is not a de Polignac number, because 145415305 - 2⁹ = 145414793 is a prime.

It is a super-2 number, since 2×145415305² = 42291221856486050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 513694 + ... + 513976.

It is an arithmetic number, because the mean of its divisors is an integer number (6395112).

Almost surely, 2^145415305 is an apocalyptic number.

It is an amenable number.

145415305 is a deficient number, since it is larger than the sum of its proper divisors (59228279).

145415305 is a wasteful number, since it uses less digits than its factorization.

145415305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 145415305 is about 12058.8268500713. The cubic root of 145415305 is about 525.8598818615.

Adding to 145415305 its reverse (503514541), we get a palindrome (648929846).

The spelling of 145415305 in words is "one hundred forty-five million, four hundred fifteen thousand, three hundred five".