2145322057 has 2 divisors, whose sum is σ = 2145322058. Its totient is φ = 2145322056.

The previous prime is 2145322043. The next prime is 2145322093. The reversal of 2145322057 is 7502235412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1785992121 + 359329936 = 42261^2 + 18956^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145322057 - 2⁷ = 2145321929 is a prime.

It is a super-2 number, since 2×2145322057² = 9204813456501422498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2145322037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072661028 + 1072661029.

It is an arithmetic number, because the mean of its divisors is an integer number (1072661029).

Almost surely, 2^2145322057 is an apocalyptic number.

It is an amenable number.

2145322057 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145322057 is an equidigital number, since it uses as much as digits as its factorization.

2145322057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 2145322057 is about 46317.6214523155. The cubic root of 2145322057 is about 1289.7261315937.

Adding to 2145322057 its reverse (7502235412), we get a palindrome (9647557469).

The spelling of 2145322057 in words is "two billion, one hundred forty-five million, three hundred twenty-two thousand, fifty-seven".