145601505 has 48 divisors (see below), whose sum is σ = 291957120. Its totient is φ = 65746944.

The previous prime is 145601501. The next prime is 145601581. The reversal of 145601505 is 505106541.

It is a happy number.

145601505 is a `hidden beast` number, since 1 + 4 + 5 + 601 + 50 + 5 = 666.

It is not a de Polignac number, because 145601505 - 2² = 145601501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145601501) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23361 + ... + 28929.

It is an arithmetic number, because the mean of its divisors is an integer number (6082440).

Almost surely, 2^145601505 is an apocalyptic number.

145601505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145601505 is an abundant number, since it is smaller than the sum of its proper divisors (146355615).

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

145601505 is a wasteful number, since it uses less digits than its factorization.

145601505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5670 (or 5667 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 145601505 is about 12066.5448658678. The cubic root of 145601505 is about 526.0842354746.

The spelling of 145601505 in words is "one hundred forty-five million, six hundred one thousand, five hundred five".