105153991 has 2 divisors, whose sum is σ = 105153992. Its totient is φ = 105153990.

The previous prime is 105153967. The next prime is 105154003. The reversal of 105153991 is 199351501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105153991 - 2¹⁹ = 104629703 is a prime.

It is a super-2 number, since 2×105153991² = 22114723646456162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105153091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52576995 + 52576996.

It is an arithmetic number, because the mean of its divisors is an integer number (52576996).

Almost surely, 2^105153991 is an apocalyptic number.

105153991 is a deficient number, since it is larger than the sum of its proper divisors (1).

105153991 is an equidigital number, since it uses as much as digits as its factorization.

105153991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6075, while the sum is 34.

The square root of 105153991 is about 10254.4620044154. The cubic root of 105153991 is about 471.9999147156. Note that the first 4 decimals are identical.

The spelling of 105153991 in words is "one hundred five million, one hundred fifty-three thousand, nine hundred ninety-one".