49721081 has 16 divisors (see below), whose sum is σ = 54336960. Its totient is φ = 45334080.

The previous prime is 49721071. The next prime is 49721083. The reversal of 49721081 is 18012794.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49721081 is a prime.

It is a super-2 number, since 2×49721081² = 4944371791617122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (49721083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74891 + ... + 75551.

It is an arithmetic number, because the mean of its divisors is an integer number (3396060).

Almost surely, 2^49721081 is an apocalyptic number.

It is an amenable number.

49721081 is a deficient number, since it is larger than the sum of its proper divisors (4615879).

49721081 is a wasteful number, since it uses less digits than its factorization.

49721081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 49721081 is about 7051.3176782783. The cubic root of 49721081 is about 367.7168411931.

The spelling of 49721081 in words is "forty-nine million, seven hundred twenty-one thousand, eighty-one".