145352513 has 8 divisors (see below), whose sum is σ = 148930848. Its totient is φ = 141783264.

The previous prime is 145352507. The next prime is 145352531. The reversal of 145352513 is 315253541.

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 145352513 - 2⁴ = 145352497 is a prime.

It is a super-2 number, since 2×145352513² = 42254706070830338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145352113) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 39206 + ... + 42752.

It is an arithmetic number, because the mean of its divisors is an integer number (18616356).

Almost surely, 2^145352513 is an apocalyptic number.

It is an amenable number.

145352513 is a deficient number, since it is larger than the sum of its proper divisors (3578335).

145352513 is an equidigital number, since it uses as much as digits as its factorization.

145352513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4543.

The product of its digits is 9000, while the sum is 29.

The square root of 145352513 is about 12056.2229989330. Note that the first 3 decimals coincide. The cubic root of 145352513 is about 525.7841801839.

The spelling of 145352513 in words is "one hundred forty-five million, three hundred fifty-two thousand, five hundred thirteen".