145913515 has 16 divisors (see below), whose sum is σ = 191639520. Its totient is φ = 105771520.

The previous prime is 145913507. The next prime is 145913519. The reversal of 145913515 is 515319541.

It is not a de Polignac number, because 145913515 - 2³ = 145913507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145913519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13251 + ... + 21619.

It is an arithmetic number, because the mean of its divisors is an integer number (11977470).

Almost surely, 2^145913515 is an apocalyptic number.

145913515 is a deficient number, since it is larger than the sum of its proper divisors (45726005).

145913515 is a wasteful number, since it uses less digits than its factorization.

145913515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8702.

The product of its digits is 13500, while the sum is 34.

The square root of 145913515 is about 12079.4666686903. The cubic root of 145913515 is about 526.4597499854.

The spelling of 145913515 in words is "one hundred forty-five million, nine hundred thirteen thousand, five hundred fifteen".