2145553513 has 2 divisors, whose sum is σ = 2145553514. Its totient is φ = 2145553512.

The previous prime is 2145553481. The next prime is 2145553519. The reversal of 2145553513 is 3153555412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2135548944 + 10004569 = 46212^2 + 3163^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145553513 - 2⁵ = 2145553481 is a prime.

It is not a weakly prime, because it can be changed into another prime (2145553519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072776756 + 1072776757.

It is an arithmetic number, because the mean of its divisors is an integer number (1072776757).

Almost surely, 2^2145553513 is an apocalyptic number.

It is an amenable number.

2145553513 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145553513 is an equidigital number, since it uses as much as digits as its factorization.

2145553513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45000, while the sum is 34.

The square root of 2145553513 is about 46320.1199588257. The cubic root of 2145553513 is about 1289.7725122161.

The spelling of 2145553513 in words is "two billion, one hundred forty-five million, five hundred fifty-three thousand, five hundred thirteen".