2102545145 has 16 divisors (see below), whose sum is σ = 2552394240. Its totient is φ = 1662552000.

The previous prime is 2102545121. The next prime is 2102545169. The reversal of 2102545145 is 5415452012.

It is an interprime number because it is at equal distance from previous prime (2102545121) and next prime (2102545169).

It is not a de Polignac number, because 2102545145 - 2²² = 2098350841 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230420 + ... + 239370.

It is an arithmetic number, because the mean of its divisors is an integer number (159524640).

Almost surely, 2^2102545145 is an apocalyptic number.

It is an amenable number.

2102545145 is a deficient number, since it is larger than the sum of its proper divisors (449849095).

2102545145 is a wasteful number, since it uses less digits than its factorization.

2102545145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9496.

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

The square root of 2102545145 is about 45853.5183491954. The cubic root of 2102545145 is about 1281.0962989291.

Adding to 2102545145 its reverse (5415452012), we get a palindrome (7517997157).

The spelling of 2102545145 in words is "two billion, one hundred two million, five hundred forty-five thousand, one hundred forty-five".