49161687 has 8 divisors (see below), whose sum is σ = 66785904. Its totient is φ = 32155968.

The previous prime is 49161661. The next prime is 49161713. The reversal of 49161687 is 78616194.

It is an interprime number because it is at equal distance from previous prime (49161661) and next prime (49161713).

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

It is not a de Polignac number, because 49161687 - 2⁷ = 49161559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49161587) 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, 154438 + ... + 154755.

It is an arithmetic number, because the mean of its divisors is an integer number (8348238).

Almost surely, 2^49161687 is an apocalyptic number.

49161687 is a deficient number, since it is larger than the sum of its proper divisors (17624217).

49161687 is a wasteful number, since it uses less digits than its factorization.

49161687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309249.

The product of its digits is 72576, while the sum is 42.

The square root of 49161687 is about 7011.5395598970. The cubic root of 49161687 is about 366.3326203742.

The spelling of 49161687 in words is "forty-nine million, one hundred sixty-one thousand, six hundred eighty-seven".