75191057 has 2 divisors, whose sum is σ = 75191058. Its totient is φ = 75191056.

The previous prime is 75191041. The next prime is 75191069. The reversal of 75191057 is 75019157.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74666881 + 524176 = 8641^2 + 724^2 .

It is an emirp because it is prime and its reverse (75019157) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75191057 - 2⁴ = 75191041 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75191087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37595528 + 37595529.

It is an arithmetic number, because the mean of its divisors is an integer number (37595529).

Almost surely, 2^75191057 is an apocalyptic number.

It is an amenable number.

75191057 is a deficient number, since it is larger than the sum of its proper divisors (1).

75191057 is an equidigital number, since it uses as much as digits as its factorization.

75191057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11025, while the sum is 35.

The square root of 75191057 is about 8671.2777028533. The cubic root of 75191057 is about 422.0741261489.

The spelling of 75191057 in words is "seventy-five million, one hundred ninety-one thousand, fifty-seven".