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57488697209 is a prime number
BaseRepresentation
bin110101100010100101…
…111110011101111001
312111101111010101221202
4311202211332131321
51420214101302314
642224314143545
74103423602136
oct654245763571
9174344111852
1057488697209
1122420964109
12b184a21bb5
1355623a11c8
142ad513d58d
1517670430de
hexd6297e779

57488697209 has 2 divisors, whose sum is σ = 57488697210. Its totient is φ = 57488697208.

The previous prime is 57488697181. The next prime is 57488697223. The reversal of 57488697209 is 90279688475.

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., 40110075625 + 17378621584 = 200275^2 + 131828^2 .

It is a cyclic number.

It is not a de Polignac number, because 57488697209 - 232 = 53193729913 is a prime.

It is not a weakly prime, because it can be changed into another prime (57488697109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28744348604 + 28744348605.

It is an arithmetic number, because the mean of its divisors is an integer number (28744348605).

Almost surely, 257488697209 is an apocalyptic number.

It is an amenable number.

57488697209 is a deficient number, since it is larger than the sum of its proper divisors (1).

57488697209 is an equidigital number, since it uses as much as digits as its factorization.

57488697209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60963840, while the sum is 65.

The spelling of 57488697209 in words is "fifty-seven billion, four hundred eighty-eight million, six hundred ninety-seven thousand, two hundred nine".