104531551 has 2 divisors, whose sum is σ = 104531552. Its totient is φ = 104531550.

The previous prime is 104531543. The next prime is 104531561. The reversal of 104531551 is 155135401.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (155135401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104531551 - 2³ = 104531543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104531501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52265775 + 52265776.

It is an arithmetic number, because the mean of its divisors is an integer number (52265776).

Almost surely, 2^104531551 is an apocalyptic number.

104531551 is a deficient number, since it is larger than the sum of its proper divisors (1).

104531551 is an equidigital number, since it uses as much as digits as its factorization.

104531551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 104531551 is about 10224.0672435191. The cubic root of 104531551 is about 471.0667650872.

Adding to 104531551 its reverse (155135401), we get a palindrome (259666952).

The spelling of 104531551 in words is "one hundred four million, five hundred thirty-one thousand, five hundred fifty-one".