49322021557 has 2 divisors, whose sum is σ = 49322021558. Its totient is φ = 49322021556.

The previous prime is 49322021521. The next prime is 49322021569. The reversal of 49322021557 is 75512022394.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36708260836 + 12613760721 = 191594^2 + 112311^2 .

It is a cyclic number.

It is not a de Polignac number, because 49322021557 - 2⁷ = 49322021429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49322021597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24661010778 + 24661010779.

It is an arithmetic number, because the mean of its divisors is an integer number (24661010779).

Almost surely, 2^49322021557 is an apocalyptic number.

It is an amenable number.

49322021557 is a deficient number, since it is larger than the sum of its proper divisors (1).

49322021557 is an equidigital number, since it uses as much as digits as its factorization.

49322021557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 49322021557 in words is "forty-nine billion, three hundred twenty-two million, twenty-one thousand, five hundred fifty-seven".