1440455253 has 8 divisors (see below), whose sum is σ = 1956845088. Its totient is φ = 942184464.

The previous prime is 1440455249. The next prime is 1440455257. The reversal of 1440455253 is 3525540441.

It is an interprime number because it is at equal distance from previous prime (1440455249) and next prime (1440455257).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1440455253 - 2² = 1440455249 is a prime.

It is a super-2 number, since 2×1440455253² = 4149822671790588018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440455257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4529575 + ... + 4529892.

It is an arithmetic number, because the mean of its divisors is an integer number (244605636).

Almost surely, 2^1440455253 is an apocalyptic number.

It is an amenable number.

1440455253 is a deficient number, since it is larger than the sum of its proper divisors (516389835).

1440455253 is an equidigital number, since it uses as much as digits as its factorization.

1440455253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9059523.

The product of its (nonzero) digits is 48000, while the sum is 33.

The square root of 1440455253 is about 37953.3299329585. The cubic root of 1440455253 is about 1129.3622247506.

Adding to 1440455253 its reverse (3525540441), we get a palindrome (4965995694).

The spelling of 1440455253 in words is "one billion, four hundred forty million, four hundred fifty-five thousand, two hundred fifty-three".