145081520 has 40 divisors (see below), whose sum is σ = 338583984. Its totient is φ = 57814272.

The previous prime is 145081483. The next prime is 145081537. The reversal of 145081520 is 25180541.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 145081520.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 18887 + ... + 25433.

Almost surely, 2^145081520 is an apocalyptic number.

145081520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145081520 is an abundant number, since it is smaller than the sum of its proper divisors (193502464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145081520 is a wasteful number, since it uses less digits than its factorization.

145081520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6837 (or 6831 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 145081520 is about 12044.9790369265. The cubic root of 145081520 is about 525.4572222491.

The spelling of 145081520 in words is "one hundred forty-five million, eighty-one thousand, five hundred twenty".