75550789 has 2 divisors, whose sum is σ = 75550790. Its totient is φ = 75550788.

The previous prime is 75550753. The next prime is 75550799. The reversal of 75550789 is 98705557.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59213025 + 16337764 = 7695^2 + 4042^2 .

It is a cyclic number.

It is not a de Polignac number, because 75550789 - 2¹⁵ = 75518021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75550729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37775394 + 37775395.

It is an arithmetic number, because the mean of its divisors is an integer number (37775395).

Almost surely, 2^75550789 is an apocalyptic number.

It is an amenable number.

75550789 is a deficient number, since it is larger than the sum of its proper divisors (1).

75550789 is an equidigital number, since it uses as much as digits as its factorization.

75550789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 441000, while the sum is 46.

The square root of 75550789 is about 8691.9956856869. The cubic root of 75550789 is about 422.7461567560.

The spelling of 75550789 in words is "seventy-five million, five hundred fifty thousand, seven hundred eighty-nine".