75449233 has 2 divisors, whose sum is σ = 75449234. Its totient is φ = 75449232.

The previous prime is 75449207. The next prime is 75449261. The reversal of 75449233 is 33294457.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43718544 + 31730689 = 6612^2 + 5633^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75449233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75449192 and 75449201.

It is not a weakly prime, because it can be changed into another prime (75449203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37724616 + 37724617.

It is an arithmetic number, because the mean of its divisors is an integer number (37724617).

Almost surely, 2^75449233 is an apocalyptic number.

It is an amenable number.

75449233 is a deficient number, since it is larger than the sum of its proper divisors (1).

75449233 is an equidigital number, since it uses as much as digits as its factorization.

75449233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 37.

The square root of 75449233 is about 8686.1517946672. The cubic root of 75449233 is about 422.5566521841.

The spelling of 75449233 in words is "seventy-five million, four hundred forty-nine thousand, two hundred thirty-three".