75020249 has 2 divisors, whose sum is σ = 75020250. Its totient is φ = 75020248.

The previous prime is 75020243. The next prime is 75020293. The reversal of 75020249 is 94202057.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74995600 + 24649 = 8660^2 + 157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75020249 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75020243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37510124 + 37510125.

It is an arithmetic number, because the mean of its divisors is an integer number (37510125).

Almost surely, 2^75020249 is an apocalyptic number.

It is an amenable number.

75020249 is a deficient number, since it is larger than the sum of its proper divisors (1).

75020249 is an equidigital number, since it uses as much as digits as its factorization.

75020249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 75020249 is about 8661.4230355063. The cubic root of 75020249 is about 421.7542818315.

The spelling of 75020249 in words is "seventy-five million, twenty thousand, two hundred forty-nine".