49533781 has 8 divisors (see below), whose sum is σ = 55355328. Its totient is φ = 43932000.

The previous prime is 49533763. The next prime is 49533791. The reversal of 49533781 is 18733594.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49533781 - 2¹⁵ = 49501013 is a prime.

It is a super-2 number, since 2×49533781² = 4907190920311922, 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 (49533791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54465 + ... + 55366.

It is an arithmetic number, because the mean of its divisors is an integer number (6919416).

Almost surely, 2^49533781 is an apocalyptic number.

49533781 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

49533781 is the 3148-th centered decagonal number.

It is an amenable number.

49533781 is a deficient number, since it is larger than the sum of its proper divisors (5821547).

49533781 is a wasteful number, since it uses less digits than its factorization.

49533781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109883.

The product of its digits is 90720, while the sum is 40.

The square root of 49533781 is about 7038.0239414199. The cubic root of 49533781 is about 367.2545287177.

The spelling of 49533781 in words is "forty-nine million, five hundred thirty-three thousand, seven hundred eighty-one".