145211500 has 72 divisors (see below), whose sum is σ = 368982432. Its totient is φ = 49778400.

The previous prime is 145211483. The next prime is 145211531. The reversal of 145211500 is 5112541.

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, 21537 + ... + 27463.

It is an arithmetic number, because the mean of its divisors is an integer number (5124756).

Almost surely, 2^145211500 is an apocalyptic number.

145211500 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 145211500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184491216).

145211500 is an abundant number, since it is smaller than the sum of its proper divisors (223770932).

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

145211500 is a wasteful number, since it uses less digits than its factorization.

145211500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5960 (or 5941 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 145211500 is about 12050.3734381968. The cubic root of 145211500 is about 525.6140962220.

The spelling of 145211500 in words is "one hundred forty-five million, two hundred eleven thousand, five hundred".