145345504 has 48 divisors (see below), whose sum is σ = 298477872. Its totient is φ = 69608448.

The previous prime is 145345481. The next prime is 145345507. The reversal of 145345504 is 405543541.

It is a happy number.

It is a super-2 number, since 2×145345504² = 42250631066028032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145345507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71932 + ... + 73924.

It is an arithmetic number, because the mean of its divisors is an integer number (6218289).

Almost surely, 2^145345504 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 145345504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149238936).

145345504 is an abundant number, since it is smaller than the sum of its proper divisors (153132368).

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

145345504 is a wasteful number, since it uses less digits than its factorization.

145345504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2099 (or 2091 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 145345504 is about 12055.9323156693. The cubic root of 145345504 is about 525.7757288209.

It can be divided in two parts, 14534 and 5504, that multiplied together give a square (79995136 = 8944²).

The spelling of 145345504 in words is "one hundred forty-five million, three hundred forty-five thousand, five hundred four".