49187509 has 16 divisors (see below), whose sum is σ = 58406400. Its totient is φ = 40529664.

The previous prime is 49187507. The next prime is 49187527. The reversal of 49187509 is 90578194.

It is not a de Polignac number, because 49187509 - 2¹ = 49187507 is a prime.

It is a super-2 number, since 2×49187509² = 4838822083250162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49187507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68052 + ... + 68770.

It is an arithmetic number, because the mean of its divisors is an integer number (3650400).

Almost surely, 2^49187509 is an apocalyptic number.

It is an amenable number.

49187509 is a deficient number, since it is larger than the sum of its proper divisors (9218891).

49187509 is a wasteful number, since it uses less digits than its factorization.

49187509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 49187509 is about 7013.3807111834. The cubic root of 49187509 is about 366.3967474469.

The spelling of 49187509 in words is "forty-nine million, one hundred eighty-seven thousand, five hundred nine".