75553123 has 2 divisors, whose sum is σ = 75553124. Its totient is φ = 75553122.

The previous prime is 75553097. The next prime is 75553141. The reversal of 75553123 is 32135557.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75553123 is a prime.

It is not a weakly prime, because it can be changed into another prime (75554123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37776561 + 37776562.

It is an arithmetic number, because the mean of its divisors is an integer number (37776562).

Almost surely, 2^75553123 is an apocalyptic number.

75553123 is a deficient number, since it is larger than the sum of its proper divisors (1).

75553123 is an equidigital number, since it uses as much as digits as its factorization.

75553123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15750, while the sum is 31.

The square root of 75553123 is about 8692.1299461064. The cubic root of 75553123 is about 422.7505100278.

The spelling of 75553123 in words is "seventy-five million, five hundred fifty-three thousand, one hundred twenty-three".