1040255553 has 4 divisors (see below), whose sum is σ = 1387007408. Its totient is φ = 693503700.

The previous prime is 1040255543. The next prime is 1040255563. The reversal of 1040255553 is 3555520401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1040255543) and next prime (1040255563).

It is not a de Polignac number, because 1040255553 - 2⁵ = 1040255521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1040255553.

It is not an unprimeable number, because it can be changed into a prime (1040255543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173375923 + ... + 173375928.

It is an arithmetic number, because the mean of its divisors is an integer number (346751852).

Almost surely, 2^1040255553 is an apocalyptic number.

It is an amenable number.

1040255553 is a deficient number, since it is larger than the sum of its proper divisors (346751855).

1040255553 is an equidigital number, since it uses as much as digits as its factorization.

1040255553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346751854.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 1040255553 is about 32252.9929308894. The cubic root of 1040255553 is about 1013.2423828973.

Adding to 1040255553 its reverse (3555520401), we get a palindrome (4595775954).

The spelling of 1040255553 in words is "one billion, forty million, two hundred fifty-five thousand, five hundred fifty-three".