49165987 has 6 divisors (see below), whose sum is σ = 53239092. Its totient is φ = 45383832.

The previous prime is 49165981. The next prime is 49166017. The reversal of 49165987 is 78956194.

It is not a de Polignac number, because 49165987 - 2³ = 49165979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49165987.

It is not an unprimeable number, because it can be changed into a prime (49165981) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 145293 + ... + 145630.

It is an arithmetic number, because the mean of its divisors is an integer number (8873182).

Almost surely, 2^49165987 is an apocalyptic number.

49165987 is a deficient number, since it is larger than the sum of its proper divisors (4073105).

49165987 is a wasteful number, since it uses less digits than its factorization.

49165987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290949 (or 290936 counting only the distinct ones).

The product of its digits is 544320, while the sum is 49.

The square root of 49165987 is about 7011.8461905550. The cubic root of 49165987 is about 366.3433006718.

The spelling of 49165987 in words is "forty-nine million, one hundred sixty-five thousand, nine hundred eighty-seven".