2145602451 has 8 divisors (see below), whose sum is σ = 2875325904. Its totient is φ = 1423140320.

The previous prime is 2145602443. The next prime is 2145602491. The reversal of 2145602451 is 1542065412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2145602451 - 2³ = 2145602443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2145602491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1814640 + ... + 1815821.

It is an arithmetic number, because the mean of its divisors is an integer number (359415738).

Almost surely, 2^2145602451 is an apocalyptic number.

2145602451 is a deficient number, since it is larger than the sum of its proper divisors (729723453).

2145602451 is a wasteful number, since it uses less digits than its factorization.

2145602451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3630661.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 2145602451 is about 46320.6482143763. The cubic root of 2145602451 is about 1289.7823182960.

Adding to 2145602451 its reverse (1542065412), we get a palindrome (3687667863).

The spelling of 2145602451 in words is "two billion, one hundred forty-five million, six hundred two thousand, four hundred fifty-one".