75432881 has 2 divisors, whose sum is σ = 75432882. Its totient is φ = 75432880.

The previous prime is 75432853. The next prime is 75432883. The reversal of 75432881 is 18823457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75411856 + 21025 = 8684^2 + 145^2 .

It is a cyclic number.

It is not a de Polignac number, because 75432881 - 2¹⁰ = 75431857 is a prime.

It is a super-2 number, since 2×75432881² = 11380239071920322, which contains 22 as substring.

Together with 75432883, 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 (75432883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37716440 + 37716441.

It is an arithmetic number, because the mean of its divisors is an integer number (37716441).

Almost surely, 2^75432881 is an apocalyptic number.

It is an amenable number.

75432881 is a deficient number, since it is larger than the sum of its proper divisors (1).

75432881 is an equidigital number, since it uses as much as digits as its factorization.

75432881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 38.

The square root of 75432881 is about 8685.2104752850. The cubic root of 75432881 is about 422.5261232870.

The spelling of 75432881 in words is "seventy-five million, four hundred thirty-two thousand, eight hundred eighty-one".