145089552 has 40 divisors (see below), whose sum is σ = 387743040. Its totient is φ = 46695040.

The previous prime is 145089551. The next prime is 145089557. The reversal of 145089552 is 255980541.

It is a self number, because there is not a number n which added to its sum of digits gives 145089552.

It is not an unprimeable number, because it can be changed into a prime (145089551) 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, 50724 + ... + 53507.

It is an arithmetic number, because the mean of its divisors is an integer number (9693576).

Almost surely, 2^145089552 is an apocalyptic number.

145089552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145089552 is an abundant number, since it is smaller than the sum of its proper divisors (242653488).

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

145089552 is a wasteful number, since it uses less digits than its factorization.

145089552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104271 (or 104265 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 39.

The square root of 145089552 is about 12045.3124492476. The cubic root of 145089552 is about 525.4669188540.

The spelling of 145089552 in words is "one hundred forty-five million, eighty-nine thousand, five hundred fifty-two".