49072217 has 6 divisors (see below), whose sum is σ = 51989418. Its totient is φ = 46158432.

The previous prime is 49072213. The next prime is 49072259. The reversal of 49072217 is 71227094.

49072217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 46185616 + 2886601 = 6796^2 + 1699^2 .

It is not a de Polignac number, because 49072217 - 2² = 49072213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49072211) 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 5 ways as a sum of consecutive naturals, for example, 28034 + ... + 29732.

It is an arithmetic number, because the mean of its divisors is an integer number (8664903).

Almost surely, 2^49072217 is an apocalyptic number.

It is an amenable number.

49072217 is a deficient number, since it is larger than the sum of its proper divisors (2917201).

49072217 is an frugal number, since it uses more digits than its factorization.

49072217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3415 (or 1716 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 49072217 is about 7005.1564579244. The cubic root of 49072217 is about 366.1102542411.

The spelling of 49072217 in words is "forty-nine million, seventy-two thousand, two hundred seventeen".