75423133 has 2 divisors, whose sum is σ = 75423134. Its totient is φ = 75423132.

The previous prime is 75423121. The next prime is 75423137. The reversal of 75423133 is 33132457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48818169 + 26604964 = 6987^2 + 5158^2 .

It is a cyclic number.

It is not a de Polignac number, because 75423133 - 2⁹ = 75422621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75423137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37711566 + 37711567.

It is an arithmetic number, because the mean of its divisors is an integer number (37711567).

Almost surely, 2^75423133 is an apocalyptic number.

It is an amenable number.

75423133 is a deficient number, since it is larger than the sum of its proper divisors (1).

75423133 is an equidigital number, since it uses as much as digits as its factorization.

75423133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 28.

The square root of 75423133 is about 8684.6492732867. The cubic root of 75423133 is about 422.5079218430.

The spelling of 75423133 in words is "seventy-five million, four hundred twenty-three thousand, one hundred thirty-three".