57051649 has 2 divisors, whose sum is σ = 57051650. Its totient is φ = 57051648.

The previous prime is 57051629. The next prime is 57051697. The reversal of 57051649 is 94615075.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43983424 + 13068225 = 6632^2 + 3615^2 .

It is a cyclic number.

It is not a de Polignac number, because 57051649 - 2¹³ = 57043457 is a prime.

It is not a weakly prime, because it can be changed into another prime (57051619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28525824 + 28525825.

It is an arithmetic number, because the mean of its divisors is an integer number (28525825).

Almost surely, 2^57051649 is an apocalyptic number.

It is an amenable number.

57051649 is a deficient number, since it is larger than the sum of its proper divisors (1).

57051649 is an equidigital number, since it uses as much as digits as its factorization.

57051649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 57051649 is about 7553.2541993501. The cubic root of 57051649 is about 384.9663185242.

The spelling of 57051649 in words is "fifty-seven million, fifty-one thousand, six hundred forty-nine".