2540363453 has 4 divisors (see below), whose sum is σ = 2541309468. Its totient is φ = 2539417440.

The previous prime is 2540363447. The next prime is 2540363459. The reversal of 2540363453 is 3543630452.

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

It is an interprime number because it is at equal distance from previous prime (2540363447) and next prime (2540363459).

It can be written as a sum of positive squares in 2 ways, for example, as 1044453124 + 1495910329 = 32318^2 + 38677^2 .

It is a cyclic number.

It is not a de Polignac number, because 2540363453 - 2⁶ = 2540363389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540363459) 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, 468968 + ... + 474353.

It is an arithmetic number, because the mean of its divisors is an integer number (635327367).

Almost surely, 2^2540363453 is an apocalyptic number.

It is an amenable number.

2540363453 is a deficient number, since it is larger than the sum of its proper divisors (946015).

2540363453 is an equidigital number, since it uses as much as digits as its factorization.

2540363453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946014.

The product of its (nonzero) digits is 129600, while the sum is 35.

The square root of 2540363453 is about 50402.0183425228. The cubic root of 2540363453 is about 1364.4740652074.

The spelling of 2540363453 in words is "two billion, five hundred forty million, three hundred sixty-three thousand, four hundred fifty-three".