49807881 has 6 divisors (see below), whose sum is σ = 71944730. Its totient is φ = 33205248.

The previous prime is 49807853. The next prime is 49807897. The reversal of 49807881 is 18870894.

It can be written as a sum of positive squares in only one way, i.e., 47734281 + 2073600 = 6909^2 + 1440^2 .

It is not a de Polignac number, because 49807881 - 2⁶ = 49807817 is a prime.

It is a super-2 number, since 2×49807881² = 4961650019420322, 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 (49807831) 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, 2767096 + ... + 2767113.

Almost surely, 2^49807881 is an apocalyptic number.

It is an amenable number.

49807881 is a deficient number, since it is larger than the sum of its proper divisors (22136849).

49807881 is a wasteful number, since it uses less digits than its factorization.

49807881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5534215 (or 5534212 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 49807881 is about 7057.4698724118. The cubic root of 49807881 is about 367.9306959322.

The spelling of 49807881 in words is "forty-nine million, eight hundred seven thousand, eight hundred eighty-one".