145444100 has 18 divisors (see below), whose sum is σ = 315613914. Its totient is φ = 58177600.

The previous prime is 145444093. The next prime is 145444127. The reversal of 145444100 is 1444541.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 35236096 + 110208004 = 5936^2 + 10498^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 727121 + ... + 727320.

Almost surely, 2^145444100 is an apocalyptic number.

145444100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145444100 is an abundant number, since it is smaller than the sum of its proper divisors (170169814).

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

145444100 is a wasteful number, since it uses less digits than its factorization.

145444100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454455 (or 1454448 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 145444100 is about 12060.0207296671. The cubic root of 145444100 is about 525.8945896614.

Adding to 145444100 its reverse (1444541), we get a palindrome (146888641).

It can be divided in two parts, 1454 and 44100, that added together give a palindrome (45554).

The spelling of 145444100 in words is "one hundred forty-five million, four hundred forty-four thousand, one hundred".