145554544 has 40 divisors (see below), whose sum is σ = 302846688. Its totient is φ = 67522560.

The previous prime is 145554529. The next prime is 145554547. The reversal of 145554544 is 445455541.

145554544 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145554544² = 42372250558095872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145554547) 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, 15544 + ... + 23080.

Almost surely, 2^145554544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145554544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151423344).

145554544 is an abundant number, since it is smaller than the sum of its proper divisors (157292144).

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

145554544 is a wasteful number, since it uses less digits than its factorization.

145554544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7633 (or 7627 counting only the distinct ones).

The product of its digits is 160000, while the sum is 37.

The square root of 145554544 is about 12064.5987915057. The cubic root of 145554544 is about 526.0276699001.

The spelling of 145554544 in words is "one hundred forty-five million, five hundred fifty-four thousand, five hundred forty-four".