103263561 has 6 divisors (see below), whose sum is σ = 149158490. Its totient is φ = 68842368.

The previous prime is 103263553. The next prime is 103263569. The reversal of 103263561 is 165362301.

103263561 is a `hidden beast` number, since 10 + 32 + 63 + 561 = 666.

It is an interprime number because it is at equal distance from previous prime (103263553) and next prime (103263569).

It can be written as a sum of positive squares in only one way, i.e., 65367225 + 37896336 = 8085^2 + 6156^2 .

It is not a de Polignac number, because 103263561 - 2³ = 103263553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103263569) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5736856 + ... + 5736873.

Almost surely, 2^103263561 is an apocalyptic number.

It is an amenable number.

103263561 is a deficient number, since it is larger than the sum of its proper divisors (45894929).

103263561 is a wasteful number, since it uses less digits than its factorization.

103263561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11473735 (or 11473732 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 103263561 is about 10161.8679877275. The cubic root of 103263561 is about 469.1542978054.

The spelling of 103263561 in words is "one hundred three million, two hundred sixty-three thousand, five hundred sixty-one".