104009551 has 4 divisors (see below), whose sum is σ = 104069104. Its totient is φ = 103950000.

The previous prime is 104009537. The next prime is 104009567. The reversal of 104009551 is 155900401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104009551 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 (104009501) 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, 27075 + ... + 30676.

It is an arithmetic number, because the mean of its divisors is an integer number (26017276).

Almost surely, 2^104009551 is an apocalyptic number.

104009551 is a deficient number, since it is larger than the sum of its proper divisors (59553).

104009551 is an equidigital number, since it uses as much as digits as its factorization.

104009551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59552.

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

The square root of 104009551 is about 10198.5072927365. The cubic root of 104009551 is about 470.2813329994.

Adding to 104009551 its reverse (155900401), we get a palindrome (259909952).

The spelling of 104009551 in words is "one hundred four million, nine thousand, five hundred fifty-one".