49661971 has 8 divisors (see below), whose sum is σ = 50394960. Its totient is φ = 48932352.

The previous prime is 49661957. The next prime is 49661993. The reversal of 49661971 is 17916694.

It is a happy number.

49661971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49661971 is a prime.

It is a super-2 number, since 2×49661971² = 4932622727209682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49661951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48715 + ... + 49723.

It is an arithmetic number, because the mean of its divisors is an integer number (6299370).

Almost surely, 2^49661971 is an apocalyptic number.

49661971 is a deficient number, since it is larger than the sum of its proper divisors (732989).

49661971 is a wasteful number, since it uses less digits than its factorization.

49661971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685.

The product of its digits is 81648, while the sum is 43.

The square root of 49661971 is about 7047.1250166291. The cubic root of 49661971 is about 367.5710655910.

The spelling of 49661971 in words is "forty-nine million, six hundred sixty-one thousand, nine hundred seventy-one".