2531453465 has 4 divisors (see below), whose sum is σ = 3037744164. Its totient is φ = 2025162768.

The previous prime is 2531453461. The next prime is 2531453479. The reversal of 2531453465 is 5643541352.

2531453465 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 can be written as a sum of positive squares in 2 ways, for example, as 466387216 + 2065066249 = 21596^2 + 45443^2 .

It is a cyclic number.

It is not a de Polignac number, because 2531453465 - 2² = 2531453461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2531453461) 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, 253145342 + ... + 253145351.

It is an arithmetic number, because the mean of its divisors is an integer number (759436041).

Almost surely, 2^2531453465 is an apocalyptic number.

It is an amenable number.

2531453465 is a deficient number, since it is larger than the sum of its proper divisors (506290699).

2531453465 is an equidigital number, since it uses as much as digits as its factorization.

2531453465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506290698.

The product of its digits is 216000, while the sum is 38.

The square root of 2531453465 is about 50313.5515045400. The cubic root of 2531453465 is about 1362.8769592449.

The spelling of 2531453465 in words is "two billion, five hundred thirty-one million, four hundred fifty-three thousand, four hundred sixty-five".