49995557 has 2 divisors, whose sum is σ = 49995558. Its totient is φ = 49995556.

The previous prime is 49995527. The next prime is 49995559. The reversal of 49995557 is 75559994.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48916036 + 1079521 = 6994^2 + 1039^2 .

It is a cyclic number.

It is not a de Polignac number, because 49995557 - 2⁶ = 49995493 is a prime.

Together with 49995559, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 49995499 and 49995508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49995559) 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 as a sum of consecutive naturals, namely, 24997778 + 24997779.

It is an arithmetic number, because the mean of its divisors is an integer number (24997779).

Almost surely, 2^49995557 is an apocalyptic number.

It is an amenable number.

49995557 is a deficient number, since it is larger than the sum of its proper divisors (1).

49995557 is an equidigital number, since it uses as much as digits as its factorization.

49995557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2551500, while the sum is 53.

The square root of 49995557 is about 7070.7536373431. The cubic root of 49995557 is about 368.3922374395.

The spelling of 49995557 in words is "forty-nine million, nine hundred ninety-five thousand, five hundred fifty-seven".