145584081 has 8 divisors (see below), whose sum is σ = 215680160. Its totient is φ = 97056036.

The previous prime is 145584077. The next prime is 145584121. The reversal of 145584081 is 180485541.

It is not a de Polignac number, because 145584081 - 2² = 145584077 is a prime.

It is a super-2 number, since 2×145584081² = 42389449281229122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145584001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2695975 + ... + 2696028.

It is an arithmetic number, because the mean of its divisors is an integer number (26960020).

Almost surely, 2^145584081 is an apocalyptic number.

It is an amenable number.

145584081 is a deficient number, since it is larger than the sum of its proper divisors (70096079).

145584081 is an equidigital number, since it uses as much as digits as its factorization.

145584081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5392012 (or 5392006 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The square root of 145584081 is about 12065.8228480282. The cubic root of 145584081 is about 526.0632492964.

The spelling of 145584081 in words is "one hundred forty-five million, five hundred eighty-four thousand, eighty-one".