145222256 has 20 divisors (see below), whose sum is σ = 291071400. Its totient is φ = 70107072.

The previous prime is 145222249. The next prime is 145222291. The reversal of 145222256 is 652222541.

145222256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 156026 + ... + 156953.

It is an arithmetic number, because the mean of its divisors is an integer number (14553570).

Almost surely, 2^145222256 is an apocalyptic number.

145222256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145222256 is an abundant number, since it is smaller than the sum of its proper divisors (145849144).

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

145222256 is a wasteful number, since it uses less digits than its factorization.

145222256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313016 (or 313010 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 145222256 is about 12050.8197231558. The cubic root of 145222256 is about 525.6270735359.

Adding to 145222256 its reverse (652222541), we get a palindrome (797444797).

The spelling of 145222256 in words is "one hundred forty-five million, two hundred twenty-two thousand, two hundred fifty-six".