2749997451 has 4 divisors (see below), whose sum is σ = 3666663272. Its totient is φ = 1833331632.

The previous prime is 2749997443. The next prime is 2749997479. The reversal of 2749997451 is 1547999472.

2749997451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2749997451 - 2³ = 2749997443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2749997391 and 2749997400.

It is not an unprimeable number, because it can be changed into a prime (2749997651) 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, 458332906 + ... + 458332911.

It is an arithmetic number, because the mean of its divisors is an integer number (916665818).

Almost surely, 2^2749997451 is an apocalyptic number.

2749997451 is a deficient number, since it is larger than the sum of its proper divisors (916665821).

2749997451 is an equidigital number, since it uses as much as digits as its factorization.

2749997451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916665820.

The product of its digits is 5715360, while the sum is 57.

The square root of 2749997451 is about 52440.4181047405. The cubic root of 2749997451 is about 1401.0192324549.

The spelling of 2749997451 in words is "two billion, seven hundred forty-nine million, nine hundred ninety-seven thousand, four hundred fifty-one".