49326781 has 12 divisors (see below), whose sum is σ = 57618108. Its totient is φ = 42104832.

The previous prime is 49326779. The next prime is 49326787. The reversal of 49326781 is 18762394.

It can be written as a sum of positive squares in 2 ways, for example, as 45346756 + 3980025 = 6734^2 + 1995^2 .

It is not a de Polignac number, because 49326781 - 2¹ = 49326779 is a prime.

It is a super-2 number, since 2×49326781² = 4866262647643922, 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 (49326787) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10635 + ... + 14551.

It is an arithmetic number, because the mean of its divisors is an integer number (4801509).

Almost surely, 2^49326781 is an apocalyptic number.

It is an amenable number.

49326781 is a deficient number, since it is larger than the sum of its proper divisors (8291327).

49326781 is a wasteful number, since it uses less digits than its factorization.

49326781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4188 (or 4181 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 49326781 is about 7023.3027131115. The cubic root of 49326781 is about 366.7422330021.

The spelling of 49326781 in words is "forty-nine million, three hundred twenty-six thousand, seven hundred eighty-one".