49898221 has 2 divisors, whose sum is σ = 49898222. Its totient is φ = 49898220.

The previous prime is 49898207. The next prime is 49898227. The reversal of 49898221 is 12289894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40832100 + 9066121 = 6390^2 + 3011^2 .

It is a cyclic number.

It is not a de Polignac number, because 49898221 - 2²³ = 41509613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49898227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24949110 + 24949111.

It is an arithmetic number, because the mean of its divisors is an integer number (24949111).

Almost surely, 2^49898221 is an apocalyptic number.

It is an amenable number.

49898221 is a deficient number, since it is larger than the sum of its proper divisors (1).

49898221 is an equidigital number, since it uses as much as digits as its factorization.

49898221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 43.

The square root of 49898221 is about 7063.8672835777. The cubic root of 49898221 is about 368.1530086985.

The spelling of 49898221 in words is "forty-nine million, eight hundred ninety-eight thousand, two hundred twenty-one".