145521200 has 60 divisors (see below), whose sum is σ = 381409368. Its totient is φ = 52915200.

The previous prime is 145521191. The next prime is 145521221. The reversal of 145521200 is 2125541.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12137 + ... + 20936.

Almost surely, 2^145521200 is an apocalyptic number.

145521200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145521200 is an abundant number, since it is smaller than the sum of its proper divisors (235888168).

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

145521200 is a wasteful number, since it uses less digits than its factorization.

145521200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33102 (or 33091 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 145521200 is about 12063.2168180797. The cubic root of 145521200 is about 525.9874989198.

Adding to 145521200 its reverse (2125541), we get a palindrome (147646741).

The spelling of 145521200 in words is "one hundred forty-five million, five hundred twenty-one thousand, two hundred".