2145303451 has 4 divisors (see below), whose sum is σ = 2145396352. Its totient is φ = 2145210552.

The previous prime is 2145303443. The next prime is 2145303481. The reversal of 2145303451 is 1543035412.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2145303451 - 2³ = 2145303443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145303481) 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, 17965 + ... + 67921.

It is an arithmetic number, because the mean of its divisors is an integer number (536349088).

Almost surely, 2^2145303451 is an apocalyptic number.

2145303451 is a deficient number, since it is larger than the sum of its proper divisors (92901).

2145303451 is an equidigital number, since it uses as much as digits as its factorization.

2145303451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92900.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 2145303451 is about 46317.4205995973. The cubic root of 2145303451 is about 1289.7224030605.

Adding to 2145303451 its reverse (1543035412), we get a palindrome (3688338863).

The spelling of 2145303451 in words is "two billion, one hundred forty-five million, three hundred three thousand, four hundred fifty-one".