49697221 has 6 divisors (see below), whose sum is σ = 57811110. Its totient is φ = 42597576.

The previous prime is 49697203. The next prime is 49697237. The reversal of 49697221 is 12279694.

It can be written as a sum of positive squares in only one way, i.e., 48804196 + 893025 = 6986^2 + 945^2 .

It is not a de Polignac number, because 49697221 - 2¹⁵ = 49664453 is a prime.

It is a super-3 number, since 3×49697221³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49697281) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 507066 + ... + 507163.

It is an arithmetic number, because the mean of its divisors is an integer number (9635185).

Almost surely, 2^49697221 is an apocalyptic number.

It is an amenable number.

49697221 is a deficient number, since it is larger than the sum of its proper divisors (8113889).

49697221 is a wasteful number, since it uses less digits than its factorization.

49697221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014243 (or 1014236 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 49697221 is about 7049.6255928950. The cubic root of 49697221 is about 367.6580121715.

The spelling of 49697221 in words is "forty-nine million, six hundred ninety-seven thousand, two hundred twenty-one".