145515513 has 32 divisors (see below), whose sum is σ = 228759552. Its totient is φ = 81115200.

The previous prime is 145515497. The next prime is 145515553. The reversal of 145515513 is 315515541.

It is not a de Polignac number, because 145515513 - 2⁴ = 145515497 is a prime.

It is a super-3 number, since 3×145515513³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (145515553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184506 + ... + 185292.

It is an arithmetic number, because the mean of its divisors is an integer number (7148736).

Almost surely, 2^145515513 is an apocalyptic number.

145515513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

145515513 is a deficient number, since it is larger than the sum of its proper divisors (83244039).

145515513 is a wasteful number, since it uses less digits than its factorization.

145515513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245.

The product of its digits is 7500, while the sum is 30.

The square root of 145515513 is about 12062.9810992142. The cubic root of 145515513 is about 525.9806469288.

The spelling of 145515513 in words is "one hundred forty-five million, five hundred fifteen thousand, five hundred thirteen".