145325552 has 20 divisors (see below), whose sum is σ = 288117720. Its totient is φ = 70972608.

The previous prime is 145325513. The next prime is 145325561. The reversal of 145325552 is 255523541.

It is a super-2 number, since 2×145325552² = 42239032128209408, which contains 22 as substring.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 104927 + ... + 106302.

It is an arithmetic number, because the mean of its divisors is an integer number (14405886).

Almost surely, 2^145325552 is an apocalyptic number.

It is an amenable number.

145325552 is a deficient number, since it is larger than the sum of its proper divisors (142792168).

145325552 is a wasteful number, since it uses less digits than its factorization.

145325552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211280 (or 211274 counting only the distinct ones).

The product of its digits is 30000, while the sum is 32.

The square root of 145325552 is about 12055.1048108260. The cubic root of 145325552 is about 525.7516694655.

The spelling of 145325552 in words is "one hundred forty-five million, three hundred twenty-five thousand, five hundred fifty-two".