2145252341 has 4 divisors (see below), whose sum is σ = 2203232172. Its totient is φ = 2087272512.

The previous prime is 2145252337. The next prime is 2145252367. The reversal of 2145252341 is 1432525412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2068339441 + 76912900 = 45479^2 + 8770^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145252341 - 2² = 2145252337 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145252311) 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, 28989860 + ... + 28989933.

It is an arithmetic number, because the mean of its divisors is an integer number (550808043).

Almost surely, 2^2145252341 is an apocalyptic number.

It is an amenable number.

2145252341 is a deficient number, since it is larger than the sum of its proper divisors (57979831).

2145252341 is an equidigital number, since it uses as much as digits as its factorization.

2145252341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57979830.

The product of its digits is 9600, while the sum is 29.

The square root of 2145252341 is about 46316.8688600600. The cubic root of 2145252341 is about 1289.7121608054.

Adding to 2145252341 its reverse (1432525412), we get a palindrome (3577777753).

The spelling of 2145252341 in words is "two billion, one hundred forty-five million, two hundred fifty-two thousand, three hundred forty-one".