145540000 has 120 divisors (see below), whose sum is σ = 377879040. Its totient is φ = 55008000.

The previous prime is 145539997. The next prime is 145540007. The reversal of 145540000 is 45541.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 145540000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145540007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 379809 + ... + 380191.

It is an arithmetic number, because the mean of its divisors is an integer number (3148992).

Almost surely, 2^145540000 is an apocalyptic number.

145540000 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 145540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188939520).

145540000 is an abundant number, since it is smaller than the sum of its proper divisors (232339040).

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

145540000 is an equidigital number, since it uses as much as digits as its factorization.

145540000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 145540000 is about 12063.9960212195. The cubic root of 145540000 is about 526.0101488594.

Adding to 145540000 its reverse (45541), we get a palindrome (145585541).

The spelling of 145540000 in words is "one hundred forty-five million, five hundred forty thousand".