49106509 has 2 divisors, whose sum is σ = 49106510. Its totient is φ = 49106508.

The previous prime is 49106501. The next prime is 49106527. The reversal of 49106509 is 90560194.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33385284 + 15721225 = 5778^2 + 3965^2 .

It is a cyclic number.

It is not a de Polignac number, because 49106509 - 2³ = 49106501 is a prime.

It is a super-2 number, since 2×49106509² = 4822898452334162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49106501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24553254 + 24553255.

It is an arithmetic number, because the mean of its divisors is an integer number (24553255).

Almost surely, 2^49106509 is an apocalyptic number.

It is an amenable number.

49106509 is a deficient number, since it is larger than the sum of its proper divisors (1).

49106509 is an equidigital number, since it uses as much as digits as its factorization.

49106509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 49106509 is about 7007.6036560296. The cubic root of 49106509 is about 366.1955144985.

The spelling of 49106509 in words is "forty-nine million, one hundred six thousand, five hundred nine".