145521185 has 16 divisors (see below), whose sum is σ = 180667200. Its totient is φ = 112435776.

The previous prime is 145521169. The next prime is 145521191. The reversal of 145521185 is 581125541.

It is a cyclic number.

It is not a de Polignac number, because 145521185 - 2⁴ = 145521169 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22886 + ... + 28544.

It is an arithmetic number, because the mean of its divisors is an integer number (11291700).

Almost surely, 2^145521185 is an apocalyptic number.

It is an amenable number.

145521185 is a deficient number, since it is larger than the sum of its proper divisors (35146015).

145521185 is a wasteful number, since it uses less digits than its factorization.

145521185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5840.

The product of its digits is 8000, while the sum is 32.

The square root of 145521185 is about 12063.2161963549. The cubic root of 145521185 is about 525.9874808473.

The spelling of 145521185 in words is "one hundred forty-five million, five hundred twenty-one thousand, one hundred eighty-five".