2102530451 has 32 divisors (see below), whose sum is σ = 2519362560. Its totient is φ = 1717438464.

The previous prime is 2102530427. The next prime is 2102530459. The reversal of 2102530451 is 1540352012.

It is not a de Polignac number, because 2102530451 - 2¹⁴ = 2102514067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102530459) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2262755 + ... + 2263683.

It is an arithmetic number, because the mean of its divisors is an integer number (78730080).

Almost surely, 2^2102530451 is an apocalyptic number.

2102530451 is a deficient number, since it is larger than the sum of its proper divisors (416832109).

2102530451 is a wasteful number, since it uses less digits than its factorization.

2102530451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2102530451 is about 45853.3581212979. The cubic root of 2102530451 is about 1281.0933145346.

Adding to 2102530451 its reverse (1540352012), we get a palindrome (3642882463).

The spelling of 2102530451 in words is "two billion, one hundred two million, five hundred thirty thousand, four hundred fifty-one".