145525550 has 12 divisors (see below), whose sum is σ = 270677616. Its totient is φ = 58210200.

The previous prime is 145525543. The next prime is 145525553. The reversal of 145525550 is 55525541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145525553) 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 5 ways as a sum of consecutive naturals, for example, 1455206 + ... + 1455305.

It is an arithmetic number, because the mean of its divisors is an integer number (22556468).

Almost surely, 2^145525550 is an apocalyptic number.

145525550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145525550 is a deficient number, since it is larger than the sum of its proper divisors (125152066).

145525550 is a wasteful number, since it uses less digits than its factorization.

145525550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2910523 (or 2910518 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 32.

The square root of 145525550 is about 12063.3971168987. The cubic root of 145525550 is about 525.9927399037.

Subtracting from 145525550 its reverse (55525541), we obtain a palindrome (90000009).

It can be divided in two parts, 14552 and 5550, that added together give a palindrome (20102).

The spelling of 145525550 in words is "one hundred forty-five million, five hundred twenty-five thousand, five hundred fifty".