2145254452 has 12 divisors (see below), whose sum is σ = 4095485856. Its totient is φ = 975115640.

The previous prime is 2145254411. The next prime is 2145254453. The reversal of 2145254452 is 2544525412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145254453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24377848 + ... + 24377935.

It is an arithmetic number, because the mean of its divisors is an integer number (341290488).

Almost surely, 2^2145254452 is an apocalyptic number.

2145254452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2145254452 is a deficient number, since it is larger than the sum of its proper divisors (1950231404).

2145254452 is a wasteful number, since it uses less digits than its factorization.

2145254452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48755798 (or 48755796 counting only the distinct ones).

The product of its digits is 64000, while the sum is 34.

The square root of 2145254452 is about 46316.8916487279. The cubic root of 2145254452 is about 1289.7125838452.

Adding to 2145254452 its reverse (2544525412), we get a palindrome (4689779864).

The spelling of 2145254452 in words is "two billion, one hundred forty-five million, two hundred fifty-four thousand, four hundred fifty-two".