105721463 has 2 divisors, whose sum is σ = 105721464. Its totient is φ = 105721462.

The previous prime is 105721459. The next prime is 105721481. The reversal of 105721463 is 364127501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105721463 - 2² = 105721459 is a prime.

It is a super-2 number, since 2×105721463² = 22354055477720738, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105721423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52860731 + 52860732.

It is an arithmetic number, because the mean of its divisors is an integer number (52860732).

Almost surely, 2^105721463 is an apocalyptic number.

105721463 is a deficient number, since it is larger than the sum of its proper divisors (1).

105721463 is an equidigital number, since it uses as much as digits as its factorization.

105721463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 105721463 is about 10282.0942905616. The cubic root of 105721463 is about 472.8474538138.

Adding to 105721463 its reverse (364127501), we get a palindrome (469848964).

The spelling of 105721463 in words is "one hundred five million, seven hundred twenty-one thousand, four hundred sixty-three".