75133811 has 2 divisors, whose sum is σ = 75133812. Its totient is φ = 75133810.

The previous prime is 75133789. The next prime is 75133831. The reversal of 75133811 is 11833157.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75133811 - 2²² = 70939507 is a prime.

It is not a weakly prime, because it can be changed into another prime (75133831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37566905 + 37566906.

It is an arithmetic number, because the mean of its divisors is an integer number (37566906).

Almost surely, 2^75133811 is an apocalyptic number.

75133811 is a deficient number, since it is larger than the sum of its proper divisors (1).

75133811 is an equidigital number, since it uses as much as digits as its factorization.

75133811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 29.

The square root of 75133811 is about 8667.9761767093. The cubic root of 75133811 is about 421.9669849062.

Adding to 75133811 its reverse (11833157), we get a palindrome (86966968).

The spelling of 75133811 in words is "seventy-five million, one hundred thirty-three thousand, eight hundred eleven".