145520255 has 16 divisors (see below), whose sum is σ = 188036640. Its totient is φ = 107707392.

The previous prime is 145520239. The next prime is 145520257. The reversal of 145520255 is 552025541.

It is a cyclic number.

It is not a de Polignac number, because 145520255 - 2⁴ = 145520239 is a prime.

It is a super-2 number, since 2×145520255² = 42352289230530050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145520257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9494 + ... + 19523.

It is an arithmetic number, because the mean of its divisors is an integer number (11752290).

Almost surely, 2^145520255 is an apocalyptic number.

145520255 is a deficient number, since it is larger than the sum of its proper divisors (42516385).

145520255 is a wasteful number, since it uses less digits than its factorization.

145520255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29098.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 145520255 is about 12063.1776493592. The cubic root of 145520255 is about 525.9863603474.

Adding to 145520255 its reverse (552025541), we get a palindrome (697545796).

The spelling of 145520255 in words is "one hundred forty-five million, five hundred twenty thousand, two hundred fifty-five".