2145052451 has 8 divisors (see below), whose sum is σ = 2157336000. Its totient is φ = 2132804520.

The previous prime is 2145052447. The next prime is 2145052487. The reversal of 2145052451 is 1542505412.

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 2145052451 - 2² = 2145052447 is a prime.

It is a super-2 number, since 2×2145052451² = 9202500035082214802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145052751) 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, 116900 + ... + 133998.

It is an arithmetic number, because the mean of its divisors is an integer number (269667000).

Almost surely, 2^2145052451 is an apocalyptic number.

2145052451 is a deficient number, since it is larger than the sum of its proper divisors (12283549).

2145052451 is a wasteful number, since it uses less digits than its factorization.

2145052451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17809.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 2145052451 is about 46314.7109566712. The cubic root of 2145052451 is about 1289.6721020259.

Adding to 2145052451 its reverse (1542505412), we get a palindrome (3687557863).

The spelling of 2145052451 in words is "two billion, one hundred forty-five million, fifty-two thousand, four hundred fifty-one".