49494781 has 16 divisors (see below), whose sum is σ = 59399424. Its totient is φ = 40322304.

The previous prime is 49494779. The next prime is 49494833. The reversal of 49494781 is 18749494.

It is a cyclic number.

It is not a de Polignac number, because 49494781 - 2¹ = 49494779 is a prime.

It is a super-2 number, since 2×49494781² = 4899466692475922, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49494751) 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, 26965 + ... + 28741.

It is an arithmetic number, because the mean of its divisors is an integer number (3712464).

Almost surely, 2^49494781 is an apocalyptic number.

It is an amenable number.

49494781 is a deficient number, since it is larger than the sum of its proper divisors (9904643).

49494781 is a wasteful number, since it uses less digits than its factorization.

49494781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980.

The product of its digits is 290304, while the sum is 46.

The square root of 49494781 is about 7035.2527317787. The cubic root of 49494781 is about 367.1581185037.

It can be divided in two parts, 4949 and 4781, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 49494781 in words is "forty-nine million, four hundred ninety-four thousand, seven hundred eighty-one".