49211213 has 4 divisors (see below), whose sum is σ = 49249788. Its totient is φ = 49172640.

The previous prime is 49211207. The next prime is 49211219. The reversal of 49211213 is 31211294.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31211294 = 2 ⋅15605647.

It is an interprime number because it is at equal distance from previous prime (49211207) and next prime (49211219).

It can be written as a sum of positive squares in 2 ways, for example, as 48135844 + 1075369 = 6938^2 + 1037^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49211213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49211219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17306 + ... + 19947.

It is an arithmetic number, because the mean of its divisors is an integer number (12312447).

Almost surely, 2^49211213 is an apocalyptic number.

It is an amenable number.

49211213 is a deficient number, since it is larger than the sum of its proper divisors (38575).

49211213 is a wasteful number, since it uses less digits than its factorization.

49211213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38574.

The product of its digits is 432, while the sum is 23.

The square root of 49211213 is about 7015.0704201740. The cubic root of 49211213 is about 366.4555948650.

The spelling of 49211213 in words is "forty-nine million, two hundred eleven thousand, two hundred thirteen".