1440550057 has 2 divisors, whose sum is σ = 1440550058. Its totient is φ = 1440550056.

The previous prime is 1440550039. The next prime is 1440550087. The reversal of 1440550057 is 7500550441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1436485801 + 4064256 = 37901^2 + 2016^2 .

It is an emirp because it is prime and its reverse (7500550441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1440550057 - 2²³ = 1432161449 is a prime.

It is not a weakly prime, because it can be changed into another prime (1440550087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720275028 + 720275029.

It is an arithmetic number, because the mean of its divisors is an integer number (720275029).

Almost surely, 2^1440550057 is an apocalyptic number.

It is an amenable number.

1440550057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440550057 is an equidigital number, since it uses as much as digits as its factorization.

1440550057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 1440550057 is about 37954.5788673778. The cubic root of 1440550057 is about 1129.3870006464.

The spelling of 1440550057 in words is "one billion, four hundred forty million, five hundred fifty thousand, fifty-seven".