145093172 has 12 divisors (see below), whose sum is σ = 290186400. Its totient is φ = 62182776.

The previous prime is 145093163. The next prime is 145093189. The reversal of 145093172 is 271390541.

145093172 is an admirable number.

It is a super-2 number, since 2×145093172² = 42104057122043168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2590922 + ... + 2590977.

It is an arithmetic number, because the mean of its divisors is an integer number (24182200).

Almost surely, 2^145093172 is an apocalyptic number.

It is an amenable number.

145093172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

145093172 is a wasteful number, since it uses less digits than its factorization.

145093172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5181910 (or 5181908 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 145093172 is about 12045.4627142339. The cubic root of 145093172 is about 525.4712889698.

The spelling of 145093172 in words is "one hundred forty-five million, ninety-three thousand, one hundred seventy-two".