1440455552 has 16 divisors (see below), whose sum is σ = 2869657800. Its totient is φ = 720227712.

The previous prime is 1440455551. The next prime is 1440455557. The reversal of 1440455552 is 2555540441.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440455551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5626652 + ... + 5626907.

Almost surely, 2^1440455552 is an apocalyptic number.

It is an amenable number.

1440455552 is a deficient number, since it is larger than the sum of its proper divisors (1429202248).

1440455552 is an equidigital number, since it uses as much as digits as its factorization.

1440455552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11253573 (or 11253561 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 35.

The square root of 1440455552 is about 37953.3338720066. Note that the first 3 decimals coincide. The cubic root of 1440455552 is about 1129.3623028924.

Adding to 1440455552 its reverse (2555540441), we get a palindrome (3995995993).

It can be divided in two parts, 14404 and 55552, that multiplied together give a palindrome (800171008).

The spelling of 1440455552 in words is "one billion, four hundred forty million, four hundred fifty-five thousand, five hundred fifty-two".