49221157 has 2 divisors, whose sum is σ = 49221158. Its totient is φ = 49221156.

The previous prime is 49221113. The next prime is 49221167. The reversal of 49221157 is 75112294.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48358116 + 863041 = 6954^2 + 929^2 .

It is a cyclic number.

It is not a de Polignac number, because 49221157 - 2¹¹ = 49219109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49221167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24610578 + 24610579.

It is an arithmetic number, because the mean of its divisors is an integer number (24610579).

Almost surely, 2^49221157 is an apocalyptic number.

It is an amenable number.

49221157 is a deficient number, since it is larger than the sum of its proper divisors (1).

49221157 is an equidigital number, since it uses as much as digits as its factorization.

49221157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 31.

The square root of 49221157 is about 7015.7791441863. The cubic root of 49221157 is about 366.4802761574.

The spelling of 49221157 in words is "forty-nine million, two hundred twenty-one thousand, one hundred fifty-seven".