49801457 has 2 divisors, whose sum is σ = 49801458. Its totient is φ = 49801456.

The previous prime is 49801421. The next prime is 49801471. The reversal of 49801457 is 75410894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40462321 + 9339136 = 6361^2 + 3056^2 .

It is a cyclic number.

It is not a de Polignac number, because 49801457 - 2¹⁰ = 49800433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49801457.

It is not a weakly prime, because it can be changed into another prime (49801057) 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, 24900728 + 24900729.

It is an arithmetic number, because the mean of its divisors is an integer number (24900729).

Almost surely, 2^49801457 is an apocalyptic number.

It is an amenable number.

49801457 is a deficient number, since it is larger than the sum of its proper divisors (1).

49801457 is an equidigital number, since it uses as much as digits as its factorization.

49801457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 49801457 is about 7057.0147371250. The cubic root of 49801457 is about 367.9148772280.

The spelling of 49801457 in words is "forty-nine million, eight hundred one thousand, four hundred fifty-seven".