2145251045 has 16 divisors (see below), whose sum is σ = 2943692928. Its totient is φ = 1470212160.

The previous prime is 2145251023. The next prime is 2145251081. The reversal of 2145251045 is 5401525412.

It is not a de Polignac number, because 2145251045 - 2¹⁰ = 2145250021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2145250999 and 2145251017.

It is a congruent 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, 50675 + ... + 82815.

It is an arithmetic number, because the mean of its divisors is an integer number (183980808).

Almost surely, 2^2145251045 is an apocalyptic number.

It is an amenable number.

2145251045 is a deficient number, since it is larger than the sum of its proper divisors (798441883).

2145251045 is a wasteful number, since it uses less digits than its factorization.

2145251045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34060.

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

The square root of 2145251045 is about 46316.8548694749. The cubic root of 2145251045 is about 1289.7119010897.

Adding to 2145251045 its reverse (5401525412), we get a palindrome (7546776457).

The spelling of 2145251045 in words is "two billion, one hundred forty-five million, two hundred fifty-one thousand, forty-five".