145884515 has 24 divisors (see below), whose sum is σ = 212505120. Its totient is φ = 95682048.

The previous prime is 145884503. The next prime is 145884517. The reversal of 145884515 is 515488541.

It is not a de Polignac number, because 145884515 - 2¹⁴ = 145868131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145884517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7310 + ... + 18579.

It is an arithmetic number, because the mean of its divisors is an integer number (8854380).

Almost surely, 2^145884515 is an apocalyptic number.

145884515 is a deficient number, since it is larger than the sum of its proper divisors (66620605).

145884515 is a wasteful number, since it uses less digits than its factorization.

145884515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25931 (or 25924 counting only the distinct ones).

The product of its digits is 128000, while the sum is 41.

The square root of 145884515 is about 12078.2662249182. The cubic root of 145884515 is about 526.4248700903.

The spelling of 145884515 in words is "one hundred forty-five million, eight hundred eighty-four thousand, five hundred fifteen".