145607181 has 16 divisors (see below), whose sum is σ = 203513856. Its totient is φ = 92424816.

The previous prime is 145607153. The next prime is 145607197. The reversal of 145607181 is 181706541.

It is a happy number.

It is not a de Polignac number, because 145607181 - 2⁶ = 145607117 is a prime.

It is a super-2 number, since 2×145607181² = 42402902317533522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145607101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10656 + ... + 20118.

It is an arithmetic number, because the mean of its divisors is an integer number (12719616).

Almost surely, 2^145607181 is an apocalyptic number.

It is an amenable number.

145607181 is a deficient number, since it is larger than the sum of its proper divisors (57906675).

145607181 is a wasteful number, since it uses less digits than its factorization.

145607181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9712.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 145607181 is about 12066.7800593199. The cubic root of 145607181 is about 526.0910715196.

The spelling of 145607181 in words is "one hundred forty-five million, six hundred seven thousand, one hundred eighty-one".