49188217 has 4 divisors (see below), whose sum is σ = 52971940. Its totient is φ = 45404496.

The previous prime is 49188211. The next prime is 49188277. The reversal of 49188217 is 71288194.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15594601 + 33593616 = 3949^2 + 5796^2 .

It is a cyclic number.

It is not a de Polignac number, because 49188217 - 2¹¹ = 49186169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49188217.

It is not an unprimeable number, because it can be changed into a prime (49188211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1891842 + ... + 1891867.

It is an arithmetic number, because the mean of its divisors is an integer number (13242985).

Almost surely, 2^49188217 is an apocalyptic number.

It is an amenable number.

49188217 is a deficient number, since it is larger than the sum of its proper divisors (3783723).

49188217 is a wasteful number, since it uses less digits than its factorization.

49188217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3783722.

The product of its digits is 32256, while the sum is 40.

The square root of 49188217 is about 7013.4311859460. The cubic root of 49188217 is about 366.3985053976.

The spelling of 49188217 in words is "forty-nine million, one hundred eighty-eight thousand, two hundred seventeen".