75554891 has 2 divisors, whose sum is σ = 75554892. Its totient is φ = 75554890.

The previous prime is 75554879. The next prime is 75554893. The reversal of 75554891 is 19845557.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75554891 - 2¹⁸ = 75292747 is a prime.

Together with 75554893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75554893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37777445 + 37777446.

It is an arithmetic number, because the mean of its divisors is an integer number (37777446).

Almost surely, 2^75554891 is an apocalyptic number.

75554891 is a deficient number, since it is larger than the sum of its proper divisors (1).

75554891 is an equidigital number, since it uses as much as digits as its factorization.

75554891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252000, while the sum is 44.

The square root of 75554891 is about 8692.2316467062. The cubic root of 75554891 is about 422.7538075623.

The spelling of 75554891 in words is "seventy-five million, five hundred fifty-four thousand, eight hundred ninety-one".