145231056 has 50 divisors (see below), whose sum is σ = 420344562. Its totient is φ = 48409920.

The previous prime is 145231027. The next prime is 145231069. The reversal of 145231056 is 650132541.

It can be written as a sum of positive squares in only one way, i.e., 141991056 + 3240000 = 11916^2 + 1800^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 54735 + ... + 57326.

Almost surely, 2^145231056 is an apocalyptic number.

145231056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145231056 is an abundant number, since it is smaller than the sum of its proper divisors (275113506).

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

145231056 is a wasteful number, since it uses less digits than its factorization.

145231056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112081 (or 112066 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 145231056 is about 12051.1848380149. The cubic root of 145231056 is about 525.6376904228.

Adding to 145231056 its reverse (650132541), we get a palindrome (795363597).

The spelling of 145231056 in words is "one hundred forty-five million, two hundred thirty-one thousand, fifty-six".