145643100 has 72 divisors (see below), whose sum is σ = 432816048. Its totient is φ = 37785600.

The previous prime is 145643087. The next prime is 145643119. The reversal of 145643100 is 1346541.

145643100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145643100² = 42423825155220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4540 + ... + 17660.

It is an arithmetic number, because the mean of its divisors is an integer number (6011334).

Almost surely, 2^145643100 is an apocalyptic number.

145643100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145643100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216408024).

145643100 is an abundant number, since it is smaller than the sum of its proper divisors (287172948).

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

145643100 is a wasteful number, since it uses less digits than its factorization.

145643100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13175 (or 13168 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 145643100 is about 12068.2683099109. The cubic root of 145643100 is about 526.1343274255.

Adding to 145643100 its reverse (1346541), we get a palindrome (146989641).

The spelling of 145643100 in words is "one hundred forty-five million, six hundred forty-three thousand, one hundred".