75450049 has 2 divisors, whose sum is σ = 75450050. Its totient is φ = 75450048.

The previous prime is 75450047. The next prime is 75450073. The reversal of 75450049 is 94005457.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54656449 + 20793600 = 7393^2 + 4560^2 .

It is a cyclic number.

It is not a de Polignac number, because 75450049 - 2¹ = 75450047 is a prime.

Together with 75450047, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 75449996 and 75450023.

It is not a weakly prime, because it can be changed into another prime (75450041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37725024 + 37725025.

It is an arithmetic number, because the mean of its divisors is an integer number (37725025).

Almost surely, 2^75450049 is an apocalyptic number.

It is an amenable number.

75450049 is a deficient number, since it is larger than the sum of its proper divisors (1).

75450049 is an equidigital number, since it uses as much as digits as its factorization.

75450049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 75450049 is about 8686.1987658584. The cubic root of 75450049 is about 422.5581755262.

The spelling of 75450049 in words is "seventy-five million, four hundred fifty thousand, forty-nine".