2115525551 has 2 divisors, whose sum is σ = 2115525552. Its totient is φ = 2115525550.

The previous prime is 2115525527. The next prime is 2115525557. The reversal of 2115525551 is 1555255112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2115525551 - 2¹⁰ = 2115524527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2115525557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057762775 + 1057762776.

It is an arithmetic number, because the mean of its divisors is an integer number (1057762776).

Almost surely, 2^2115525551 is an apocalyptic number.

2115525551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115525551 is an equidigital number, since it uses as much as digits as its factorization.

2115525551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12500, while the sum is 32.

The square root of 2115525551 is about 45994.8426565414. The cubic root of 2115525551 is about 1283.7272445856.

The spelling of 2115525551 in words is "two billion, one hundred fifteen million, five hundred twenty-five thousand, five hundred fifty-one".