145611081 has 32 divisors (see below), whose sum is σ = 268953600. Its totient is φ = 75641040.

The previous prime is 145611077. The next prime is 145611113. The reversal of 145611081 is 180116541.

145611081 is a `hidden beast` number, since 1 + 45 + 611 + 0 + 8 + 1 = 666.

145611081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145611081 - 2² = 145611077 is a prime.

It is a super-3 number, since 3×145611081³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (145611181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32941 + ... + 37098.

It is an arithmetic number, because the mean of its divisors is an integer number (8404800).

Almost surely, 2^145611081 is an apocalyptic number.

145611081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145611081 is a deficient number, since it is larger than the sum of its proper divisors (123342519).

145611081 is a wasteful number, since it uses less digits than its factorization.

145611081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70066 (or 70060 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 145611081 is about 12066.9416589292. The cubic root of 145611081 is about 526.0957684877.

The spelling of 145611081 in words is "one hundred forty-five million, six hundred eleven thousand, eighty-one".