49072821 has 8 divisors (see below), whose sum is σ = 74777664. Its totient is φ = 28041600.

The previous prime is 49072819. The next prime is 49072871. The reversal of 49072821 is 12827094.

It is a happy number.

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

It is not a de Polignac number, because 49072821 - 2¹ = 49072819 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49072811) 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, 1168380 + ... + 1168421.

It is an arithmetic number, because the mean of its divisors is an integer number (9347208).

Almost surely, 2^49072821 is an apocalyptic number.

It is an amenable number.

49072821 is a deficient number, since it is larger than the sum of its proper divisors (25704843).

49072821 is a wasteful number, since it uses less digits than its factorization.

49072821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336811.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 49072821 is about 7005.1995688917. The cubic root of 49072821 is about 366.1117563109. Note that the first 3 decimals are identical.

The spelling of 49072821 in words is "forty-nine million, seventy-two thousand, eight hundred twenty-one".