145055532 has 24 divisors (see below), whose sum is σ = 340494336. Its totient is φ = 48061648.

The previous prime is 145055527. The next prime is 145055539. The reversal of 145055532 is 235550541.

It is a happy number.

145055532 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 2×145055532² = 42082214727606048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145055532.

It is not an unprimeable number, because it can be changed into a prime (145055539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34188 + ... + 38195.

It is an arithmetic number, because the mean of its divisors is an integer number (14187264).

Almost surely, 2^145055532 is an apocalyptic number.

145055532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145055532 is an abundant number, since it is smaller than the sum of its proper divisors (195438804).

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

145055532 is a wasteful number, since it uses less digits than its factorization.

145055532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72557 (or 72555 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 145055532 is about 12043.9001988559. The cubic root of 145055532 is about 525.4258458713.

The spelling of 145055532 in words is "one hundred forty-five million, fifty-five thousand, five hundred thirty-two".