2153155517 has 2 divisors, whose sum is σ = 2153155518. Its totient is φ = 2153155516.

The previous prime is 2153155481. The next prime is 2153155577. The reversal of 2153155517 is 7155513512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1920104761 + 233050756 = 43819^2 + 15266^2 .

It is a cyclic number.

It is not a de Polignac number, because 2153155517 - 2⁸ = 2153155261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2153155577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076577758 + 1076577759.

It is an arithmetic number, because the mean of its divisors is an integer number (1076577759).

Almost surely, 2^2153155517 is an apocalyptic number.

It is an amenable number.

2153155517 is a deficient number, since it is larger than the sum of its proper divisors (1).

2153155517 is an equidigital number, since it uses as much as digits as its factorization.

2153155517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26250, while the sum is 35.

The square root of 2153155517 is about 46402.1068163936. The cubic root of 2153155517 is about 1291.2939997133.

The spelling of 2153155517 in words is "two billion, one hundred fifty-three million, one hundred fifty-five thousand, five hundred seventeen".