49721971 has 8 divisors (see below), whose sum is σ = 54853344. Its totient is φ = 44777280.

The previous prime is 49721963. The next prime is 49721981. The reversal of 49721971 is 17912794.

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 49721971 - 2³ = 49721963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49721951) 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, 46111 + ... + 47176.

It is an arithmetic number, because the mean of its divisors is an integer number (6856668).

Almost surely, 2^49721971 is an apocalyptic number.

49721971 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

49721971 is a deficient number, since it is larger than the sum of its proper divisors (5131373).

49721971 is a wasteful number, since it uses less digits than its factorization.

49721971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93341.

The product of its digits is 31752, while the sum is 40.

The square root of 49721971 is about 7051.3807867679. The cubic root of 49721971 is about 367.7190352057.

The spelling of 49721971 in words is "forty-nine million, seven hundred twenty-one thousand, nine hundred seventy-one".