75411857 has 2 divisors, whose sum is σ = 75411858. Its totient is φ = 75411856.

The previous prime is 75411839. The next prime is 75411863. The reversal of 75411857 is 75811457.

It is a happy number.

It is a Cunningham number, because it is equal to 8684²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75411856 + 1 = 8684^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 75411857 - 2¹⁸ = 75149713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75411857.

It is not a weakly prime, because it can be changed into another prime (75411827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37705928 + 37705929.

It is an arithmetic number, because the mean of its divisors is an integer number (37705929).

Almost surely, 2^75411857 is an apocalyptic number.

It is an amenable number.

75411857 is a deficient number, since it is larger than the sum of its proper divisors (1).

75411857 is an equidigital number, since it uses as much as digits as its factorization.

75411857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39200, while the sum is 38.

The square root of 75411857 is about 8684.0000575772. Note that the first 4 decimals coincide. The cubic root of 75411857 is about 422.4868653643.

The spelling of 75411857 in words is "seventy-five million, four hundred eleven thousand, eight hundred fifty-seven".