2145351252 has 48 divisors (see below), whose sum is σ = 5464876032. Its totient is φ = 649632480.

The previous prime is 2145351223. The next prime is 2145351283. The reversal of 2145351252 is 2521535412.

It is a super-3 number, since 3×2145351252³ (a number of 29 digits) contains 333 as substring.

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, 203823 + ... + 214089.

It is an arithmetic number, because the mean of its divisors is an integer number (113851584).

Almost surely, 2^2145351252 is an apocalyptic number.

2145351252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2145351252 is an abundant number, since it is smaller than the sum of its proper divisors (3319524780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145351252 is a wasteful number, since it uses less digits than its factorization.

2145351252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11868 (or 11866 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 2145351252 is about 46317.9366120729. The cubic root of 2145351252 is about 1289.7319820570.

Adding to 2145351252 its reverse (2521535412), we get a palindrome (4666886664).

The spelling of 2145351252 in words is "two billion, one hundred forty-five million, three hundred fifty-one thousand, two hundred fifty-two".