1548641057 has 2 divisors, whose sum is σ = 1548641058. Its totient is φ = 1548641056.

The previous prime is 1548641033. The next prime is 1548641069. The reversal of 1548641057 is 7501468451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1091707681 + 456933376 = 33041^2 + 21376^2 .

It is a cyclic number.

It is not a de Polignac number, because 1548641057 - 2²⁴ = 1531863841 is a prime.

It is not a weakly prime, because it can be changed into another prime (1548647057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 774320528 + 774320529.

It is an arithmetic number, because the mean of its divisors is an integer number (774320529).

Almost surely, 2^1548641057 is an apocalyptic number.

It is an amenable number.

1548641057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1548641057 is an equidigital number, since it uses as much as digits as its factorization.

1548641057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 1548641057 is about 39352.7769922276. The cubic root of 1548641057 is about 1156.9562139006.

The spelling of 1548641057 in words is "one billion, five hundred forty-eight million, six hundred forty-one thousand, fifty-seven".