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105450019 = 1953104717
BaseRepresentation
bin1100100100100…
…00101000100011
321100102102020021
412102100220203
5203443400034
614244054311
72420211313
oct622205043
9240372207
10105450019
1154584184
122b394397
1318b0137c
141000d443
1593ce6b4
hex6490a23

105450019 has 8 divisors (see below), whose sum is σ = 113095440. Its totient is φ = 98014176.

The previous prime is 105450011. The next prime is 105450041. The reversal of 105450019 is 910054501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 105450019 - 23 = 105450011 is a prime.

It is a super-2 number, since 2×1054500192 = 22239413014200722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105449975 and 105450002.

It is not an unprimeable number, because it can be changed into a prime (105450011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51352 + ... + 53365.

It is an arithmetic number, because the mean of its divisors is an integer number (14136930).

Almost surely, 2105450019 is an apocalyptic number.

105450019 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

105450019 is a deficient number, since it is larger than the sum of its proper divisors (7645421).

105450019 is a wasteful number, since it uses less digits than its factorization.

105450019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104789.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 105450019 is about 10268.8859668418. The cubic root of 105450019 is about 472.4424221806.

The spelling of 105450019 in words is "one hundred five million, four hundred fifty thousand, nineteen".

Divisors: 1 19 53 1007 104717 1989623 5550001 105450019