145552 has 20 divisors (see below), whose sum is σ = 308016. Its totient is φ = 66080.

The previous prime is 145549. The next prime is 145577. The reversal of 145552 is 255541.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238 + ... + 589.

2¹⁴⁵⁵⁵² is an apocalyptic number.

It is an amenable number.

145552 is an abundant number, since it is smaller than the sum of its proper divisors (162464).

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

145552 is a wasteful number, since it uses less digits than its factorization.

145552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846 (or 840 counting only the distinct ones).

The product of its digits is 1000, while the sum is 22.

The square root of 145552 is about 381.5127782919. The cubic root of 145552 is about 52.6024605248.

Subtracting from 145552 its sum of digits (22), we obtain a triangular number (145530 = T₅₃₉).

The spelling of 145552 in words is "one hundred forty-five thousand, five hundred fifty-two".