75255553 has 2 divisors, whose sum is σ = 75255554. Its totient is φ = 75255552.

The previous prime is 75255491. The next prime is 75255559. The reversal of 75255553 is 35555257.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46009089 + 29246464 = 6783^2 + 5408^2 .

It is a cyclic number.

It is not a de Polignac number, because 75255553 - 2⁹ = 75255041 is a prime.

It is not a weakly prime, because it can be changed into another prime (75255559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37627776 + 37627777.

It is an arithmetic number, because the mean of its divisors is an integer number (37627777).

Almost surely, 2^75255553 is an apocalyptic number.

It is an amenable number.

75255553 is a deficient number, since it is larger than the sum of its proper divisors (1).

75255553 is an equidigital number, since it uses as much as digits as its factorization.

75255553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131250, while the sum is 37.

The square root of 75255553 is about 8674.9958501431. The cubic root of 75255553 is about 422.1947713173.

The spelling of 75255553 in words is "seventy-five million, two hundred fifty-five thousand, five hundred fifty-three".