49256509 has 8 divisors (see below), whose sum is σ = 50677560. Its totient is φ = 47840256.

The previous prime is 49256507. The next prime is 49256521. The reversal of 49256509 is 90565294.

It can be written as a sum of positive squares in 4 ways, for example, as 10381284 + 38875225 = 3222^2 + 6235^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49256509 - 2¹ = 49256507 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49256507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33657 + ... + 35089.

It is an arithmetic number, because the mean of its divisors is an integer number (6334695).

Almost surely, 2^49256509 is an apocalyptic number.

It is an amenable number.

49256509 is a deficient number, since it is larger than the sum of its proper divisors (1421051).

49256509 is a wasteful number, since it uses less digits than its factorization.

49256509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 49256509 is about 7018.2981555360. The cubic root of 49256509 is about 366.5679939263.

The spelling of 49256509 in words is "forty-nine million, two hundred fifty-six thousand, five hundred nine".