49605781 has 4 divisors (see below), whose sum is σ = 49619872. Its totient is φ = 49591692.

The previous prime is 49605767. The next prime is 49605793. The reversal of 49605781 is 18750694.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49605781 is a prime.

It is a super-2 number, since 2×49605781² = 4921467017239922, which contains 22 as substring.

It is a pancake number, because a pancake can be divided into 49605781 parts by 9960 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49605701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3280 + ... + 10486.

It is an arithmetic number, because the mean of its divisors is an integer number (12404968).

Almost surely, 2^49605781 is an apocalyptic number.

It is an amenable number.

49605781 is a deficient number, since it is larger than the sum of its proper divisors (14091).

49605781 is an equidigital number, since it uses as much as digits as its factorization.

49605781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14090.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 49605781 is about 7043.1371561258. The cubic root of 49605781 is about 367.4323839382.

The spelling of 49605781 in words is "forty-nine million, six hundred five thousand, seven hundred eighty-one".