145331052 has 12 divisors (see below), whose sum is σ = 339105816. Its totient is φ = 48443680.

The previous prime is 145331051. The next prime is 145331063. The reversal of 145331052 is 250133541.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×145331052² = 42242229350853408, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (145331051) 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 3 ways as a sum of consecutive naturals, for example, 6055449 + ... + 6055472.

It is an arithmetic number, because the mean of its divisors is an integer number (28258818).

Almost surely, 2^145331052 is an apocalyptic number.

145331052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145331052 is an abundant number, since it is smaller than the sum of its proper divisors (193774764).

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

145331052 is a wasteful number, since it uses less digits than its factorization.

145331052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12110928 (or 12110926 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 145331052 is about 12055.3329277959. The cubic root of 145331052 is about 525.7583019255.

Adding to 145331052 its reverse (250133541), we get a palindrome (395464593).

The spelling of 145331052 in words is "one hundred forty-five million, three hundred thirty-one thousand, fifty-two".