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105497881 is a prime number
BaseRepresentation
bin1100100100111…
…00010100011001
321100111211212221
412102130110121
5204001413011
614245104041
72420500666
oct622342431
9240454787
10105497881
1154607135
122b3b8021
1318b1a0a8
1410022a6d
1593dd971
hex649c519

105497881 has 2 divisors, whose sum is σ = 105497882. Its totient is φ = 105497880.

The previous prime is 105497863. The next prime is 105497891. The reversal of 105497881 is 188794501.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69305625 + 36192256 = 8325^2 + 6016^2 .

It is a cyclic number.

It is not a de Polignac number, because 105497881 - 27 = 105497753 is a prime.

It is a super-2 number, since 2×1054978812 = 22259605790980322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105497831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52748940 + 52748941.

It is an arithmetic number, because the mean of its divisors is an integer number (52748941).

Almost surely, 2105497881 is an apocalyptic number.

It is an amenable number.

105497881 is a deficient number, since it is larger than the sum of its proper divisors (1).

105497881 is an equidigital number, since it uses as much as digits as its factorization.

105497881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 105497881 is about 10271.2161402630. The cubic root of 105497881 is about 472.5138892738.

The spelling of 105497881 in words is "one hundred five million, four hundred ninety-seven thousand, eight hundred eighty-one".