75253649 has 2 divisors, whose sum is σ = 75253650. Its totient is φ = 75253648.

The previous prime is 75253643. The next prime is 75253669. The reversal of 75253649 is 94635257.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68178049 + 7075600 = 8257^2 + 2660^2 .

It is a cyclic number.

It is not a de Polignac number, because 75253649 - 2⁸ = 75253393 is a prime.

It is a super-2 number, since 2×75253649² = 11326223375630402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75253643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37626824 + 37626825.

It is an arithmetic number, because the mean of its divisors is an integer number (37626825).

Almost surely, 2^75253649 is an apocalyptic number.

It is an amenable number.

75253649 is a deficient number, since it is larger than the sum of its proper divisors (1).

75253649 is an equidigital number, since it uses as much as digits as its factorization.

75253649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 41.

The square root of 75253649 is about 8674.8861087625. The cubic root of 75253649 is about 422.1912107135.

The spelling of 75253649 in words is "seventy-five million, two hundred fifty-three thousand, six hundred forty-nine".