2451271553 has 4 divisors (see below), whose sum is σ = 2478814020. Its totient is φ = 2423729088.

The previous prime is 2451271547. The next prime is 2451271573. The reversal of 2451271553 is 3551721542.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 893232769 + 1558038784 = 29887^2 + 39472^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2451271553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2451271513) 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, 13771100 + ... + 13771277.

It is an arithmetic number, because the mean of its divisors is an integer number (619703505).

Almost surely, 2^2451271553 is an apocalyptic number.

It is an amenable number.

2451271553 is a deficient number, since it is larger than the sum of its proper divisors (27542467).

2451271553 is an equidigital number, since it uses as much as digits as its factorization.

2451271553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27542466.

The product of its digits is 42000, while the sum is 35.

The square root of 2451271553 is about 49510.3176418815. The cubic root of 2451271553 is about 1348.3329313591.

The spelling of 2451271553 in words is "two billion, four hundred fifty-one million, two hundred seventy-one thousand, five hundred fifty-three".