49911381 has 24 divisors (see below), whose sum is σ = 78274560. Its totient is φ = 30463776.

The previous prime is 49911361. The next prime is 49911383. The reversal of 49911381 is 18311994.

It is not a de Polignac number, because 49911381 - 2⁶ = 49911317 is a prime.

It is a super-2 number, since 2×49911381² = 4982291906654322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49911383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13180 + ... + 16538.

It is an arithmetic number, because the mean of its divisors is an integer number (3261440).

Almost surely, 2^49911381 is an apocalyptic number.

It is an amenable number.

49911381 is a deficient number, since it is larger than the sum of its proper divisors (28363179).

49911381 is a wasteful number, since it uses less digits than its factorization.

49911381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3505 (or 3502 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 49911381 is about 7064.7987232475. The cubic root of 49911381 is about 368.1853710261.

The spelling of 49911381 in words is "forty-nine million, nine hundred eleven thousand, three hundred eighty-one".