104563551 has 4 divisors (see below), whose sum is σ = 139418072. Its totient is φ = 69709032.

The previous prime is 104563513. The next prime is 104563553. The reversal of 104563551 is 155365401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155365401 = 3 ⋅51788467.

It is not a de Polignac number, because 104563551 - 2¹³ = 104555359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104563553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17427256 + ... + 17427261.

It is an arithmetic number, because the mean of its divisors is an integer number (34854518).

Almost surely, 2^104563551 is an apocalyptic number.

104563551 is a deficient number, since it is larger than the sum of its proper divisors (34854521).

104563551 is an equidigital number, since it uses as much as digits as its factorization.

104563551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34854520.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 104563551 is about 10225.6320587042. The cubic root of 104563551 is about 471.1148290398.

The spelling of 104563551 in words is "one hundred four million, five hundred sixty-three thousand, five hundred fifty-one".