49761781 has 12 divisors (see below), whose sum is σ = 51687552. Its totient is φ = 47904048.

The previous prime is 49761743. The next prime is 49761797. The reversal of 49761781 is 18716794.

It is not a de Polignac number, because 49761781 - 2¹¹ = 49759733 is a prime.

It is a super-2 number, since 2×49761781² = 4952469696583922, 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 (49761731) 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, 223036 + ... + 223258.

It is an arithmetic number, because the mean of its divisors is an integer number (4307296).

Almost surely, 2^49761781 is an apocalyptic number.

It is an amenable number.

49761781 is a deficient number, since it is larger than the sum of its proper divisors (1925771).

49761781 is a wasteful number, since it uses less digits than its factorization.

49761781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 423 counting only the distinct ones).

The product of its digits is 84672, while the sum is 43.

The square root of 49761781 is about 7054.2030733457. The cubic root of 49761781 is about 367.8171473638.

The spelling of 49761781 in words is "forty-nine million, seven hundred sixty-one thousand, seven hundred eighty-one".